I'd argue it depends. Although not all possibilities are creating equal, optimizing for optionality often comes at the cost of depth & expertise in a particular subject

Ah, yes! I see this as a great argument for ruling out possibilities for “what to work on.” I meant ruling out possibilities for “what might be true” — do you think the same applies?

wait isn't that rulling out the possibility that it might be a wining game

Not for a bond fund.