Typically, we don't know why these illusions work in the brain.

His face was human again, pleasant, handsome, but the illusion didn't work anymore.

It's an image checker, so you can see how well your illusion works.

They were getting more clever by the hour, trying psychological tricks when the physical illusions didn't work.

But the illusion works better in a theater than on television.

I suspected that he did most of his work through his link, but the illusion worked.

The illusion wouldn't work nearly as well inside.

By thinking big, Leonardo became big; illusions sometimes work that way.

My illusion worked in a blinding flash of electrical light.

The illusion is working, and an almost out-of-body sensation takes over.