Last one in 13a. Not parsed. Or maybe wrong.
Interested to read of differing reactions to a potentially frustrating challenge. I noticed that when, as a youngster, I chalked well known images on the street, by way of busking, people would reward me when they could name what they already recognised.
Oh! It's such and such! Ker-ching!
If they couldn't place it they would quietly walk away. Empty hat.
Nothing to do with me. There must be a term for this. Bingo bias?