When we step back from these individual observations, we see a clear argument form: To produce at your peak level you need to work for extended periods with full concentration on a single task free from distraction. Put another way, the type of work that optimizes your performance is deep work.
Multi-tasking on high skill jobs is devastating for productivity because of attention residue. Attention Residue is when part of your attention is on an unfinished task while working on a task at hand.
