Maybe? My productivity is highly elastic. Yesterday I got 8 hours' worth done in 3, and today I spent 8 hours getting 3 done, but today I laid down a brutal fusillade of emails that looked like I was busy as fuck.

I'm not efficient by choice. I have to finish fast, because if I don't I have to work in the nighttime which makes me into, as Carl Panzram put it, "a bit of a grouch".