From reader Jake Tesler:

What takes less time: A) Selecting, say, 20 files at once, and dragging them to an external hard drive, or B) Selecting four files, five different times and then copying? To summarize, does it take less time to have one transfer of twenty files or five transfers (four files each) if it is to the same destination volume?

Grab your iPhone or iPod touch, tap the Clock app, tap the Stopwatch button at the bottom of the screen, and put it to good use. I'm also available for questions regarding fish catching.

Reader HPW writes: