Within this square I can fit five cookies and if I want to be a little bit naughty I can watch this: if I sneak a cookie and eat it I’m in trouble right because there’s missing space - the cookies don’t fill the square anymore, or do they? If I turn each of the remaining cookies 180 degrees they fill the square again - it’s not magic, it’s math and psychology!

And I want you to do it at home, that is why we made this a silicone baking mold that you can put dough in and then bake into cookies to perform the illusion. The cookies pop right out of the silicone and it’s wonderful! The kit also comes with a silicone baking mat and a unique little spatula with ink on it.

This is just one of the several pieces of delicious brain food we cooked up and put in the latest Curiosity Box. Join at curiositybox.com and use code ILLUSION to save twenty dollars.