That wasn't clear to me, but in the light of your comment, I see that it's plausible. Thank you.

It always throws me when someone suggests an exercise, and someone, in reply, says, "Or instead, do this other thing."

I'm oddly reminded of when we were recruiting and asked people to write some code to solve a specific task and bring it to the interview for discussion. Someone said "This spec is obvious nonsense" and proceeded to write a completely different spec, implement that, and get it horribly wrong.

That's hilarious. You would at least want to get right the spec you came up with yourself, one would suspect.

“Look my code is perfect, I’m not a BA so the spec might be off!”