Just had another one of those typically I-got-nothing-done days. I’m sure most PIs know the feeling: the day is somehow over, and you’re exhausted, and you feel like you’ve got absolutely nothing to show for it. Like many, I've had more of these days than I'd care to count, but this one was almost poetically unproductive, because here I am at the end of the day, literally staring at the same damn sentence I’ve been trying to write since the morning.