Use a pen to write on a piece of paper and explain how a flushing toilet works.

Take as long as you like, use as many words and pictures as needed.

Once done, realize how bad that explanation is and how little you really know about that topic.

Not mine - but source lost.

LATER : Maybe it was Feynman … thankyou @muncman

John Philpin : Lifestream @JohnPhilpin
← An IndieWeb πŸ•ΈπŸ’ β†’
← β†’
Creative Commons License
This site and its content by John Philpin is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. Based on a work at