I would change that to “easily conceived” instead of “simple”, and make sure to distinguish between “unsolved” and “unagreed upon”.
Technically, “easily conceived” is more accurate, but the hindsight bias might make that hard to determine.
I would change that to “easily conceived” instead of “simple”, and make sure to distinguish between “unsolved” and “unagreed upon”.
Technically, “easily conceived” is more accurate, but the hindsight bias might make that hard to determine.