Paradox: The Barber’s Paradox

🔓 This is an unlocked sample! Byrdseed.TV is open for new memberships through May 27th, 2022. Join today!


Students will grapple with The Barber's Paradox about a barber who may (or may not) shave himself.

The setup is: The barber is the person who shaves those, and only those, who do not shave themselves.

The question: Does the barber shave himself?

This sets up a contradiction:

  1. The barber cannot shave himself, since barbers don't shave those who shave themselves.
  2. But, if he doesn't shave himself, then he must shave himself, since barbers shave those who don't shave themselves!
  3. But… barbers cannot shave themselves. 🤯

Teachers love Byrdseed.TV!

"Byrdseed.TV has always been amazing but during the last year, you have been elevated to SUPERAMAZINGFANTASTIC status. You have saved my students from super boring lessons."  ~  Heidi in California

"I absolutely LOVE all of the ideas on your site. I am using Byrdseed TV to differentiate activities for my clustered students to work on when the rest of the class is doing something they’ve already mastered."  ~  Wendy in Washington

"I just subscribed to Byrdseed.TV and am loving it -- though it is kind of scary addictive in a binge-watching kind of way (that, by the way, is a compliment)."  ~  Elizabeth from Florida

Keep Watching

Paradoxes →