Mystery #1Tier 2-3brain / movement
Why can't you tickle yourself?
Get a friend to wiggle their fingers on the sole of your foot and you squirm and giggle helplessly. Now try doing the exact same thing to yourself, with your own fingers, in the very same spot. Nothing. No giggle, no squirm. Same skin, same touch, so why does the tickle vanish when you are the one doing it?
Your guess
What's your hunch about why a friend can tickle you but you can't tickle yourself?
There's no single magic word to type, have a go in your own words, then reveal the answer to see how close you got.
Make a guess to unlock the hints and the answer.