I asked you to invert a binary tree because I was asked to invert a binary tree. My father was asked to invert a binary tree. My father's father was asked to invert a binary tree.

Charles Babbage asked Ada Lovelace to invert a binary tree before he agreed to let her work on his Analytical Engine.

In his famous resume, Leonardo claimed knowledge of "efficient methods of turning a bifurcated assembly of facts upon itself, and other procedures useful in the arts of arranging and displaying facts."

It's tradition.

https://en.m.wikipedia.org/wiki/Ada_Lovelace

https://duckduckgo.com/?q=resume+of+leonardo+da+vinci&t=fpas...