> I stay productive by eliminating idle time between tasks. Switching should be seamless. This is typically easier with physical labour I think (only 'typicall

> I stay productive by eliminating idle time between tasks. Switching should be seamless. This is typically easier with physical labour I think (only 'typically': of course there are variations). Our bodies are far better designed for physical tasks than our minds are for purely mental ones. The latter mismatch forces a variety of coping workarounds, amongst which are task-switching costs.