“The pot is on the stove. The lids are in the drawer. You open the drawer, seeing disordered lids of different sizes, many set nearly vertical to help with drying. You take the one that looks correct: too big! You try again with one that looks one size too small, and— surprise! —it matches the pot exactly.”
If that’s ever happened to you, you may have been experiencing an illusion which has recently been formally described and named – the Pot/Lid Illusion. Professor Stefano Mastandrea University of Roma Tre, Italy, and professor John M. Kennedy University of Toronto, Canada provide a description in their new contribution to the journal i-Perception, September-October 2016, 1–4, entitled : Pot/Lid Illusion.