If You Can’t Explain Your Code, You Don’t Understand It

Working code isn’t proof of understanding.
It’s often just proof of trial and error.

Real understanding shows up when you can:
explain why this solution exists
describe trade-offs without hand-waving
predict where it will fail

That’s why great engineers write:
clear comments
simple functions
obvious interfaces

Not for others — for themselves in six months.

If your explanation is messy, your thinking probably is too.

Clarity in code starts with clarity in thought.

– Serguey Asael Shinder