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10h video + live UX training

Starts at $275

Practical AI Guidelines &
100s of Real-Life Examples.
10h Videos + UX Training

30 video lessons + live UX training.
For senior designers, UX researchers and design leads.

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How to design AI products that actually work for people.

Vitaly on stage, presenting at Nordic.js in 2019. Watch the intro + sample

In this video course, we’ll explore:

Lesson number:

State of AI

What can we design with AI today? We’ll study the different flavors of AI UX, the emergence of AI fatigue and how people actually use AI. We’ll also touch upon product-market-fit gap, quiet vs. visible AI, AI search optimization — and why "AI-second" products might work better than "AI-first" products.

Free lesson preview 

Duration

Lesson number:

AI Under The Hood

How magical is AI really? Well, let’s take a closer look at what actually happens inside of that magical box. We’ll break down confusing AI vocabulary to have meaningful conversations with AI engineers and product managers.

Duration

Lesson number:

System & User Prompts

That’s where our UX journey begins! As designers, we can shape and influence how AI responds to user’s queries. It all starts with system and user prompts — and custom instructions written by users.

Duration

Lesson number:

Context Windows

For an intelligence of any kind, AI is remarkably forgetful — especially during longer conversations with users. It’s not surprising because it actually has a limited “memory”, or “context window”.

Duration

Lesson number:

Temperature

Well, it’s uncharted waters now! Let’s explore temperature, top_p, top_k and max_tokens — slightly mysterious but very useful AI parameters that control how “creative”, predictable and verbose AI's responses are.

Duration

Lesson number:

Memory Management

We often hear about AI having “memory”, but how does it actually work? We’ll explore how AI mimics memory, the critical UX challenges that memory management creates and why we need to set up different personas and give users control over what the AI remembers about them.

Duration

Lesson number:

Prompt Engineering

As humans, we aren’t very good at articulating our intent well. So why do most AI products place the burden of crafting the perfect prompt on users' shoulders?

Let’s see how we can change that, and why why a good old-fashioned UI with nudges and controls is so much needed to complement an empty text box.

Duration

Lesson number:

Slow AI vs. Fast AI

Over the years, AI experiences have changed. Compared to the early days, AI today spends way more time planning, researching, “reasoning”, asking for more context and stitching data together. For some tasks users need slow AI, and for others AI must deliver results faster, despite its drawbacks.

Duration

Lesson number:

AI Agents

The most significant attribute of AI agents is autonomy. But how much control are we willing to give AI agents to take over and do our work for us? We’ll look at how AI agents work, where they struggle, how they are organized and why it’s necessary to keep AI agents on a leash.

Duration

Lesson number:

AI Constraints and Limitations

AI has inherent flaws and limitations. As designers, we need to know these constraints to design viable and feasible AI experiences. We’ll explore AI naivety and hallucinations, slow speed and low accuracy, forgetfulness and AI model collapse.

Duration

Lesson number:

Digital Sustainability

No technology is free — it always has some costs attached to it. In fact, AI has an enormous environmental cost, from massive energy consumption and toxic mining to carbon emissions and water required for cooling.

Duration

Lesson number:

Usability

How do people actually use AI? How do AI experiences fit into their daily workflows? And what do we know about common user behavior patterns and shortcomings of AI experiences today?

Duration

Lesson number:

Feature Discoverability

For any AI feature to deliver value, it must first be discovered — and that’s where the troubles begin. Prompt suggestions often go unnoticed, “sparkles” are often misunderstood, and even prominent AI assistants get ignored.

Duration

Lesson number:

Capability Awareness

To many, an empty text box is remarkably scary. It suggests to “Ask me anything”, but then users don’t really know what to ask, and what format, and at which level of detail.

Let’s see how we can help users understand what AI can do for them — e.g. with task-oriented suggestions, good old-fashioned filters and UI controls.

Duration

Lesson number:

Context Awareness

Context awareness is knowing what it remembers and why it generated a specific response. Making AI’s context transparent creates trust, but it can go way beyond showing sources.

Let’s see how we can show scope with context chips, how to map statements to specific text fragments and give users better overview of what AI knows about them.

Duration

Lesson number:

Onboarding AI Features

Key AI features are often left between the lines, inviting assumptions and guesses. And typically that’s the job of onboarding.

Let’s see how we can design better onboarding for AI features, from pre-prompts and interaction modes to custom user personas and recipe guides.

Duration

Lesson number:

AI Design Framework

The time has come! Let’s dive into the myriad of practical design patterns for AI interfaces. Let’s explore how we can address them — from scaffolding and interaction to input UX, output UX, refinement and orchestration.

Duration

Lesson number:

Scaffolding (Part 1)

So where should AI actually live in your product? Let’s dive into “scaffolding” — the layout, composition and integration of our AI features.

We’ll explore center-stage experiences, collapsible widgets, side panels and complex flow builders. We’ll see how AI can go way beyond a text box.

Duration

Lesson number:

Scaffolding (Part 2)

We’ll drill down into very impactful but underutilized patterns for scaffolding. We’ll explore inline overlays, infinite canvases, AI-powered data grids, third-party systems and the rise of the AI-enhanced search.

Duration

Lesson number:

Interaction Design

We often think about chat input, but there are different interaction modes — from the familiar text and voice inputs to visual, haptic and ambient interactions.

And then, we also have multi-modal experiences, and we can even turn a simple doodle into a working prototype.

Duration

Lesson number:

AI Chat Interfaces

Designing an AI-human chat is an entirely different beast than designing a social messaging experience like WhatsApp or Telegram.

People are very good at spotting an AI disguised as a “human assistant”. We’ll explore design guidelines for transparent, useful and respectful human-AI interactions.

Duration

Lesson number:

Voice UIs

For AI features on mobile, voice is often a default expectation, as typing is tiring and slow. We’ll study UX challenges of designing invisible UIs, why it’s so critical to be intentional with voice and tone, the 10-second rule, and how to create an accessible voice experience.

Duration

Lesson number:

Conversational UIs

A good conversation is built on trust, understanding, clarity and relevance. Yet many chatbots run in loops, making users work harder, rather than simplify the experience for them.

We’ll explore how to design dialogue flows, shape voice and tone and UX guidelines for more meaningful and helpful Human-AI conversations.

Duration

Lesson number:

Designing Input UX (Part 1)

When getting answers is easy, we have to figure out how to ask the right questions. They must be detailed enough and specific enough. So let’s dive into the art of designing the input UX, modes of prompting and how to constrain the AI upfront with scoping and filtering.

Duration

Lesson number:

Designing Input UX (Part 2)

Good prompts don’t have to require a lot of typing. We can use structured prompts, templates and presets, daemons and personas that change the AI's perspective, task builders that construct prompts and visual canvases for intuitive interactions.

Duration

Lesson number:

Designing Output UX

Users are often confronted with a wall of text produced by AI — and they often get lost somewhere between sentences, especially in longer conversations. How do we make output more useful?

We'll explore the need for forced ranking, the consensus meter, color-coding, style lenses and collapsible reasoning traces to help users make sense of the AI output instantly.

Duration

Lesson number:

Accessibility

Great UX is always built on accessible, inclusive experiences — and AI is certainly no exception. AI UIs have critical accessibility challenges, from the inverted navigation nightmare in chatbots to noisy, polluting streaming.

And we’ll see why conversations about AI accessibility start not with the UI, but with the data that AI has been trained on.

Duration

Lesson number:

Refinement UX

The most frustrating part of the AI experience happens after the AI gives its first response — well, welcome to the refinement journey!

We'll explore how to make refinement less annoying and less time-consuming — with direct interactions, contextual prompts and precision knobs to get the exact result users need, faster.

Duration

Lesson number:

Orchestration UX

As AI takes over tactical tasks, our role as designers is evolving from sketching UIs to orchestrating flows. We’ll explore what it means to direct, monitor, and intervene with AI.

We’ll see why building guardrails, permissions and approval flows is so critical. This is our new job: keeping the AI on a leash, so it is always aligned with human values.

Duration

Lesson number:

Designing Guardrails and Permissions

In times when AI can act on user’s beahalf — by sending emails, spending money and initiating actions — we need to establish robust guardrails and a safety net to avoid AI agents going off the track.

Duration

Lesson number:

AI Capability / Value Matrix

Not every AI feature can deliver on its promises, and not every problem needs an AI solution. We can map out AI capabilities against the value they deliver, to prioritize, estimate and choose AI initiatives to work on. That’s usually called AI Capability/Value Matrix.

Duration

Lesson number:

Design Workflow For AI Features

Once we identified high-value opportunities with AI, we need to start designing AI flows. How exactly would it work though? Let’s explore how design teams create, iterate on and evolve AI features from scratch — from low-fidelity AI prototypes to testing, refinements and usability testing.

Duration

Lesson number:

How To Measure AI UX (with AI Evals)

How do we measure the quality of AI experiences? How do we track AI performance over time, and its impact on UX, loyalty, retention and quality of output?

Meet the world of AI Evals — a way of tracking the performance and reliability of AI systems. Let’s dive into the specifics of how we can make it work for AI features.

Duration

Lesson number:

How To Build Trust and Confidence

AI is fragile, and often mistakes aren’t an exception, but rather a matter of time. And every time a user discovers a mistake, it’s a small betrayal of trust. Mistakes are expensive as each betrayal chips away from the carefully orchestrated relationship with the user.

Duration

Lesson number:

Next Steps

You’ve made it all the way to the last session! But what’s next? Just a few closing thoughts on next steps — and how to feel comfortable and confident with the ever-evolving AI. Plus, the role of humans in that AI world, and the values that we bring to the table.

Duration

Simple prices, no surprises. Buy once, access forever.

Get once, watch forever. New videos added regularly.

A growing library of video lessons & examples. With 30 lessons available now, and more added once a year.

Ideal for interface designers, UI engineers and developers who’d love to be prepared for complex UX challenges.

Table of Contents →

  1. Section Lesson number:

    State of AI

    What can we design with AI today? We’ll study the different flavors of AI UX, the emergence of AI fatigue and how people actually use AI. We’ll also touch upon product-market-fit gap, quiet vs. visible AI, AI search optimization — and why "AI-second" products might work better than "AI-first" products.

    Free lesson preview 

  2. Section Lesson number:

    AI Under The Hood

    How magical is AI really? Well, let’s take a closer look at what actually happens inside of that magical box. We’ll break down confusing AI vocabulary to have meaningful conversations with AI engineers and product managers.

  3. Section Lesson number:

    System & User Prompts

    That’s where our UX journey begins! As designers, we can shape and influence how AI responds to user’s queries. It all starts with system and user prompts — and custom instructions written by users.

  4. Section Lesson number:

    Context Windows

    For an intelligence of any kind, AI is remarkably forgetful — especially during longer conversations with users. It’s not surprising because it actually has a limited “memory”, or “context window”.

  5. Section Lesson number:

    Temperature

    Well, it’s uncharted waters now! Let’s explore temperature, top_p, top_k and max_tokens — slightly mysterious but very useful AI parameters that control how “creative”, predictable and verbose AI's responses are.

  6. Section Lesson number:

    Memory Management

    We often hear about AI having “memory”, but how does it actually work? We’ll explore how AI mimics memory, the critical UX challenges that memory management creates and why we need to set up different personas and give users control over what the AI remembers about them.

  7. Section Lesson number:

    Prompt Engineering

    As humans, we aren’t very good at articulating our intent well. So why do most AI products place the burden of crafting the perfect prompt on users' shoulders?

    Let’s see how we can change that, and why why a good old-fashioned UI with nudges and controls is so much needed to complement an empty text box.

  8. Section Lesson number:

    Slow AI vs. Fast AI

    Over the years, AI experiences have changed. Compared to the early days, AI today spends way more time planning, researching, “reasoning”, asking for more context and stitching data together. For some tasks users need slow AI, and for others AI must deliver results faster, despite its drawbacks.

  9. Section Lesson number:

    AI Agents

    The most significant attribute of AI agents is autonomy. But how much control are we willing to give AI agents to take over and do our work for us? We’ll look at how AI agents work, where they struggle, how they are organized and why it’s necessary to keep AI agents on a leash.

  10. Section Lesson number:

    AI Constraints and Limitations

    AI has inherent flaws and limitations. As designers, we need to know these constraints to design viable and feasible AI experiences. We’ll explore AI naivety and hallucinations, slow speed and low accuracy, forgetfulness and AI model collapse.

  11. Section Lesson number:

    Digital Sustainability

    No technology is free — it always has some costs attached to it. In fact, AI has an enormous environmental cost, from massive energy consumption and toxic mining to carbon emissions and water required for cooling.

  12. Section Lesson number:

    Usability

    How do people actually use AI? How do AI experiences fit into their daily workflows? And what do we know about common user behavior patterns and shortcomings of AI experiences today?

  13. Section Lesson number:

    Feature Discoverability

    For any AI feature to deliver value, it must first be discovered — and that’s where the troubles begin. Prompt suggestions often go unnoticed, “sparkles” are often misunderstood, and even prominent AI assistants get ignored.

  14. Section Lesson number:

    Capability Awareness

    To many, an empty text box is remarkably scary. It suggests to “Ask me anything”, but then users don’t really know what to ask, and what format, and at which level of detail.

    Let’s see how we can help users understand what AI can do for them — e.g. with task-oriented suggestions, good old-fashioned filters and UI controls.

  15. Section Lesson number:

    Context Awareness

    Context awareness is knowing what it remembers and why it generated a specific response. Making AI’s context transparent creates trust, but it can go way beyond showing sources.

    Let’s see how we can show scope with context chips, how to map statements to specific text fragments and give users better overview of what AI knows about them.

  16. Section Lesson number:

    Onboarding AI Features

    Key AI features are often left between the lines, inviting assumptions and guesses. And typically that’s the job of onboarding.

    Let’s see how we can design better onboarding for AI features, from pre-prompts and interaction modes to custom user personas and recipe guides.

  17. Section Lesson number:

    AI Design Framework

    The time has come! Let’s dive into the myriad of practical design patterns for AI interfaces. Let’s explore how we can address them — from scaffolding and interaction to input UX, output UX, refinement and orchestration.

  18. Section Lesson number:

    Scaffolding (Part 1)

    So where should AI actually live in your product? Let’s dive into “scaffolding” — the layout, composition and integration of our AI features.

    We’ll explore center-stage experiences, collapsible widgets, side panels and complex flow builders. We’ll see how AI can go way beyond a text box.

  19. Section Lesson number:

    Scaffolding (Part 2)

    We’ll drill down into very impactful but underutilized patterns for scaffolding. We’ll explore inline overlays, infinite canvases, AI-powered data grids, third-party systems and the rise of the AI-enhanced search.

  20. Section Lesson number:

    Interaction Design

    We often think about chat input, but there are different interaction modes — from the familiar text and voice inputs to visual, haptic and ambient interactions.

    And then, we also have multi-modal experiences, and we can even turn a simple doodle into a working prototype.

  21. Section Lesson number:

    AI Chat Interfaces

    Designing an AI-human chat is an entirely different beast than designing a social messaging experience like WhatsApp or Telegram.

    People are very good at spotting an AI disguised as a “human assistant”. We’ll explore design guidelines for transparent, useful and respectful human-AI interactions.

  22. Section Lesson number:

    Voice UIs

    For AI features on mobile, voice is often a default expectation, as typing is tiring and slow. We’ll study UX challenges of designing invisible UIs, why it’s so critical to be intentional with voice and tone, the 10-second rule, and how to create an accessible voice experience.

  23. Section Lesson number:

    Conversational UIs

    A good conversation is built on trust, understanding, clarity and relevance. Yet many chatbots run in loops, making users work harder, rather than simplify the experience for them.

    We’ll explore how to design dialogue flows, shape voice and tone and UX guidelines for more meaningful and helpful Human-AI conversations.

  24. Section Lesson number:

    Designing Input UX (Part 1)

    When getting answers is easy, we have to figure out how to ask the right questions. They must be detailed enough and specific enough. So let’s dive into the art of designing the input UX, modes of prompting and how to constrain the AI upfront with scoping and filtering.

  25. Section Lesson number:

    Designing Input UX (Part 2)

    Good prompts don’t have to require a lot of typing. We can use structured prompts, templates and presets, daemons and personas that change the AI's perspective, task builders that construct prompts and visual canvases for intuitive interactions.

  26. Section Lesson number:

    Designing Output UX

    Users are often confronted with a wall of text produced by AI — and they often get lost somewhere between sentences, especially in longer conversations. How do we make output more useful?

    We'll explore the need for forced ranking, the consensus meter, color-coding, style lenses and collapsible reasoning traces to help users make sense of the AI output instantly.

  27. Section Lesson number:

    Accessibility

    Great UX is always built on accessible, inclusive experiences — and AI is certainly no exception. AI UIs have critical accessibility challenges, from the inverted navigation nightmare in chatbots to noisy, polluting streaming.

    And we’ll see why conversations about AI accessibility start not with the UI, but with the data that AI has been trained on.

  28. Section Lesson number:

    Refinement UX

    The most frustrating part of the AI experience happens after the AI gives its first response — well, welcome to the refinement journey!

    We'll explore how to make refinement less annoying and less time-consuming — with direct interactions, contextual prompts and precision knobs to get the exact result users need, faster.

  29. Section Lesson number:

    Orchestration UX

    As AI takes over tactical tasks, our role as designers is evolving from sketching UIs to orchestrating flows. We’ll explore what it means to direct, monitor, and intervene with AI.

    We’ll see why building guardrails, permissions and approval flows is so critical. This is our new job: keeping the AI on a leash, so it is always aligned with human values.

  30. Section Lesson number:

    Designing Guardrails and Permissions

    In times when AI can act on user’s beahalf — by sending emails, spending money and initiating actions — we need to establish robust guardrails and a safety net to avoid AI agents going off the track.

  31. Section Lesson number:

    AI Capability / Value Matrix

    Not every AI feature can deliver on its promises, and not every problem needs an AI solution. We can map out AI capabilities against the value they deliver, to prioritize, estimate and choose AI initiatives to work on. That’s usually called AI Capability/Value Matrix.

  32. Section Lesson number:

    Design Workflow For AI Features

    Once we identified high-value opportunities with AI, we need to start designing AI flows. How exactly would it work though? Let’s explore how design teams create, iterate on and evolve AI features from scratch — from low-fidelity AI prototypes to testing, refinements and usability testing.

  33. Section Lesson number:

    How To Measure AI UX (with AI Evals)

    How do we measure the quality of AI experiences? How do we track AI performance over time, and its impact on UX, loyalty, retention and quality of output?

    Meet the world of AI Evals — a way of tracking the performance and reliability of AI systems. Let’s dive into the specifics of how we can make it work for AI features.

  34. Section Lesson number:

    How To Build Trust and Confidence

    AI is fragile, and often mistakes aren’t an exception, but rather a matter of time. And every time a user discovers a mistake, it’s a small betrayal of trust. Mistakes are expensive as each betrayal chips away from the carefully orchestrated relationship with the user.

  35. Section Lesson number:

    Next Steps

    You’ve made it all the way to the last session! But what’s next? Just a few closing thoughts on next steps — and how to feel comfortable and confident with the ever-evolving AI. Plus, the role of humans in that AI world, and the values that we bring to the table.

1 | 35

10h Video, Real-Life Examples, Checklists & Live Sessions.

With 100s of practical examples, guidelines, gotchas, checklists, takeaways & exercises — applicable to your project right away.

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Add-on: Live UX training. Deep-dive sessions with 1:1 feedback & UX certification.

Sneak peek into the video training sessions. What's UX training like?

That’s what these wonderful people say about the course!

  • Brad Frost profile photo

    Atomic design, Front-End Engineer

    A powerful new paradigm is here, and everybody is scrambling to figure out how to wield AI. It’s still early days, but one thing’s become abundantly clear: chatbot UIs are weak sauce. There’s so much potential to improve the UX of AI.

    Enter Vitaly! He’s spent more time than nearly anyone else on Earth sweating the UX details of digital interfaces, and he’s going to bring his thoughtful, practical, and fun advice to this brave new world!

  • Ioana Teleanu profile photo

    AI x Product Design Leader

    Vitaly has been helping designers build clarity through valuable content long before I joined the design industry, many many years ago. And this course makes no exception!

    It helps you understand deeply how to properly surface AI in design, and how to make the right interaction decisions in the new era of our roles. Very educational, well-structured, and super valuable!

  • Addy Osmani profile photo

    Engineering leader and senior thinker

    It’s one of those rare resources that cuts through the hype and gives you the practical building blocks you actually need when designing and shipping AI products.

    As someone who works on AI-assisted engineering at scale, I find the way it breaks down complex ideas on designing around AI’s unpredictability not just insightful but immediately usable. It feels less like abstract theory and more like a field guide you’d want open on your desk while you’re building.

  • Christine Vallaure profile photo

    Founder of moonlearning.io

    I’m a huge fan of Vitaly’s work for its depth, clarity and practicality, and this course is no exception. The course cuts through the hype and shows how AI can be fast, trustworthy and genuinely helpful.

  • Tejas Kumar profile photo

    Developer Advocate, Host, Author and Advisor.

    Once again, Vitaly delivers exactly what our industry needs at exactly the right time. It’s an inspiring, thoughtful, and deeply practical guide to building humane and effective AI experiences.

  • Nick DiLallo profile photo

    UX Writer

    Essential viewing for anyone working at the intersection of design and AI. Vitaly’s course is filled with clear explanations, practical advice, and new ways of understanding where our interfaces are headed next. Get this course for yourself, then get it for your whole company.

  • Jeremy Miller profile photo

    Host of the Beyond UX Design Podcast

    Vitaly has a gift for making complicated topics feel approachable. AI can get overwhelming fast, but the way he explains it makes it easy to follow and actually enjoyable to learn.

    The materials are top-notch. Honestly, Vitaly’s courses are the best examples I’ve seen of what a virtual course should look like. The content is in-depth and packed with value, but it never feels heavy. It’s engaging, practical, and you walk away with real tools you can put into practice.

    If you’re looking to get into designing for AI but have no idea where to start, I can’t recommend “Design Patterns for AI Interfaces” enough!

  • Andy Budd profile photo

    Investor, Advisor and Coach

    We’ve already lived through the chatbot era and know how tricky unbounded input can be — especially when it’s our job to make sense of the output when things go wrong. AI adds new layers: hidden logic, uncertain confidence levels, and the need to surface what’s usually invisible.

    That’s why I’m so glad Vitaly has put this course together. He’s one of the most knowledgeable and approachable lecturers I know — I’ve always found his sessions both entertaining and educational. If you’re a UX designer grappling with these new frontiers, I can’t think of a better guide.

  • Victor Ponamariov profile photo

    UX Designer

    As always, Vitaly has delivered another outstanding course. You’ll learn not just practical design patterns — you’ll actually gain much deeper insights into AI itself.

    The sheer amount of information is impressive — starting with how AI works and moving all the way through design patterns, user experience, accessibility, and beyond.

  • Luke Bennis profile photo

    Product Designer

    Vitaly has created an essential resource for designing with AI. His guidance offers a clear grounding in the current state of AI, while expanding your understanding of the critical design patterns shaping its future. He shows how to design AI experiences that are not only usable, but also trustworthy and aligned with people, and the way they think.

  • Olga Martyniuk profile photo

    UX Designer

    The atmosphere was great and I’ve learned a lot! What was most valuable for me was teaching us how to approach a design process, what questions to ask even before opening a new Figma design. I found this knowledge very helpful and I use it since the workshop all the time.

    Whenever we’ve been discussing something, we were presented with many real-life examples, good as well as bad ones. That made understanding and learning much easier. The tasks I had to complete were interesting and challenging, helping me to grow my skills and understanding. All in all, an amazing workshop which I definitely recommend!

  • Jon Yablonski’s profile photo

    Senior Product Designer

    Blown away by how comprehensive Design Patterns for AI Interfaces is! Vitaly Friedman covers everything from the fundamentals of AI interaction design to nuanced patterns around scaffolding, refinement, and orchestration. It’s one of the few courses that thoughtfully connects the dots between usability, trust, and transparency—showing how to design AI that genuinely empowers users rather than overwhelms them.

    Every lesson feels intentional and applicable, making it a rare, end-to-end resource for anyone serious about designing meaningful AI experiences.

  • Krisztina Szerovay’s profile photo

    UX Designer

    In the sea of AI noise, Vitaly’s course serves as an invaluable filter: the course is full of clear, easy-to-understand explanations and real-life examples. I highly recommend this course to any designer wanting to learn about the current state of AI and how we can create more meaningful AI experiences.

    It is especially recommended for designers experiencing AI fatigue or FOMO: this course will cure both, since instead of trying to pay attention to everything AI-related that pops up in your feed, you’ll know exactly what to focus on (and what to ignore).

Design Patterns for AI Interfaces, brought to you by your AI Mastermind from a not-so-distant future, Vitaly Friedman.

Vitaly sitting at a computer desk with a cup of coffee

Simple prices, no surprises.
Buy once, access forever.