A thunk is an unusual question that makes you think: or as Ian Gilbert explains more eloquently: A beguiling question about everyday things that stops you in your tracks and helps you start to look at the world in a whole new light.

How did people make the first tools, if they didn’t have any tools?

Why are they called apartments, when they're all stuck together?

If the hands fall off my clock, is it still a clock?

If I deliberately drop a bucket full of paint onto a canvas, is it art?

What if I drop the bucket accidently?

Which is more important, being right or being nice?

If Monday was a colour

What 

C o L O  u R

Would Monday be?

Can you have a conversation with an invisible friend?