This fits in your wallet, it’s almost painfully easy to do, it’s unusual, and it’s devestatingly clever.
You will have seen Stroop tests on the internet. It’s where a color is written as a word in an color that isn’t the color’s name. Writing “red” for example, but the font is green. “Chroma” is a killer trick that’s disguised as a Stroop test.
You ask your spectator to think of a color, and you time how quickly they can find that color on your Stroop test card (which is the size of a credit card and fits in your wallet).
Without them saying a thing, you know what work they’re thinking of.
There is a little bit of memory work involved, but it’s not at all hard and is taught in detail. Once you know it, you’ll know it forever.
