>To get the most even cuts of an onion by making radial cuts, one should aim towards a point 55.73066% the radius of the onion below the center. This is close, but different from, the 61.803% claimed in the Youtube video at the top.

Wife walks into kitchen with 3447 cut onions in piles: "What are you doing?!" This guy: "I just cannot get these onions cut to a point 55.73066% below the origin! The best I have achieved is only 2 significant digits of accuracy." Wife, mumbling: "Maybe that's why Kenji said: 60%..."

Mathematicians are wired differently than engineers. To us engineers, e is approximately pi is approximately 3.