We are descended from creatures that sat by a lake in Kenya for millennia, carving and crafting arrowheads.
We can all concentrate like a boss.
It's distractions that are the problem. Our ancestors split shift on kids, which is still the biggest distractor.
But they never had neighbours, phones, TV, or better things to do.
Perhaps one day we shall fine distractors like we fine polluters. Till then its a question of quiet offices.