7 ideas from TED-Ed, each explained in a minute and credited to the original work. Free on Savvy.
TED-Ed animates Hilbert's hotel: one new guest, then an infinite busload, then infinitely many buses — each fitted in by moving everyone already there to a cleverly chosen room.
— TED-Ed, The Infinite Hotel Paradox - Jeff Dekofsky
Prisoners who have only ever seen shadows on a wall take them for reality. An animated telling of Plato's allegory.
— TED-Ed, Plato’s Allegory of the Cave - Alex Gendler
An animated explanation of the tragedy of the commons: each person acting sensibly for themselves can ruin what everyone depends on.
— TED-Ed, What is the tragedy of the commons? - Nicholas Amendolare
Prisoners in a line must each guess the colour of the hat on their own head. Pause and try it before the solution.
— TED-Ed, Can you solve the prisoner hat riddle? - Alex Gendler
A group must cross a narrow bridge at night with one light and a deadline. Pause and try it before the solution.
— TED-Ed, Can you solve the bridge riddle? - Alex Gendler
A version of the islanders puzzle, where one public statement that seems to tell nobody anything new sets a chain of reasoning in motion.
— TED-Ed, Can you solve the famously difficult green-eyed logic puzzle? - Alex Gendler
Three gods answer in a language you do not know: one tells the truth, one lies, one answers at random. Pause and try it before the solution.
— TED-Ed, Can you solve the three gods riddle? - Alex Gendler