[fragmede]

> Human attention generally isn't zero sum like that

How so? There's only 24 hours in a day, and so many things to do in them. During those hours, one can pay attention to multiple topics but even then, the time limit means only so many details and thinking time can be acquired during them.

[Karrot_Kream]

That's where "like that" comes from. We're certainly not at the point where our attention is theoretically maximized.