The only way i see humans being able to stay in the loop is brain upgrades. If you get a few proccessors, and fast memory/storage up there, and the bus connection to our consciousness dosn't cause too much of a drag factor on the machine, then we maybe able to keep up for a bit longer. That said i have no doubt we will exceed human brain speeds with other tech in the future (current neruomorphic chips are slowed down over a thousand times, just so humans can keep up with whats going on).
With suffcient AI inteligence, per human productivity can theoritcally be infinite, because there is no reason for everyone on earth to have infinte productivity (2 times infinity is stil infinity) only a few rich people will under capitalism.
Dynamically binding, you realize the magic. Statically binding, you see only the hierarchy.