Every week I see on LinkedIn or Twitter some demo of an AI generating a complete interface in sixty seconds. It looks incredible. Perfect gradients, clean spacing, coherent iconography, everything in place. The comments fill with fire and applause. And I sit there thinking the same thing every time.

That is not design. It is decoration.

Pretty is not the same as functional

Anyone who has worked on a real digital product knows that the hard part is not making something pretty. The hard part is making something that solves a business problem while giving the user an experience that does not make them overthink. That requires understanding context, constraints, human behaviors, technical limitations, compliance policies and a thousand variables that no prompt will contain.

I have designed screens that look simple, almost boring, and that improved the conversion rate of a financial product by fifteen percent. They were not pretty in the Instagram sense. They were effective in the sense that users did what they needed to do without friction.

An AI would never have generated that screen because AI does not understand why sometimes less design is better design.

The aesthetic bias of AI

Generative AIs are trained on images that people considered attractive. That creates a bias toward what is visually striking, what generates likes, what looks modern and trendy. But product design does not seek likes. It seeks for the user to complete a task.

I have seen proposals made with AI that are portfolio material but that in production would be a usability disaster. Buttons without hover states, forms without visual validation, flows that look beautiful in a static screen but do not consider what happens when the user makes a mistake or when the data does not load.

Real design lives in the edge cases. And AI does not think about edge cases because nobody taught it that is where design matters most.

I am not against pretty

Let me be clear. Aesthetics matter. An ugly interface generates distrust, especially in financial products where the perception of solidity is everything. But aesthetics have to be the result of informed design decisions not the goal itself.

When AI generates something pretty and I take it as a starting point to build something functional, there is value. When someone takes what AI generated and delivers it as final design without questioning anything, there is a problem the user will eventually pay for.

Pretty design without substance is the visual equivalent of saying something with a confident voice without knowing what you are talking about.

It shows. It always shows.