My students' writing topic was "If you could send one modern item back in time to one specific era, what item and era would you pick?". Huge range from "bicycle to China, 500 BCE" to "rabid badger to Boris Johnson's college room, 1984".
@fesshole rubber duck to Pythagoras. (doesn't always have to be about changing the world.)

@fishidwardrobe @fesshole Might be more entertaining to throw goedel's incompleteness theorem at him--in its mathematical form.

"Oh, y'all worship sqrt(2)? That's mighty cute."

@crazyeddie @fesshole this is how we don't get triangles. do you want triangles?
@fishidwardrobe @fesshole I hate triangles. That's why I burn all my bridges.
@crazyeddie @fesshole you can't be mathematically sure you've burnt *all* your bridges
@fishidwardrobe
If you're in Königsberg, you are provably unable to burn all your bridges
@crazyeddie @fesshole