I have long maintained that bodies are suboptimal vehicles with which to schlep minds around.
Most recent data point in support of this position: On Tuesday, I managed to hurt my knee in the course of grading papers. Grading papers! Come on now!
I guess it's also a data point in support of the hypothesis that if there exists an improbable way to injure oneself, I will manage to injure myself that way. (Ask me about the time I sprained my ankle stepping onto a bed.) However, if I weren't embodied, that wouldn't be the case.
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Undoubtedly someone's going to want to know how grading papers resulted in a hurt knee, so here's what I think happened: I was sitting on a bed with a laptop and a clipboard on my lap, grading a bunch of online assignments. To create enough surface at the right height on which to balance both laptop and clipboard, I was sitting cross-legged. Apparently one of the knees was getting more than its share of the stress thusly distributed.
I anticipate I will be advised to sit at a table or desk like a sensible human being to get through long stretches of grading. The problem with doing that is that the available chairs in my Cave of Grading are hard enough that I can only count on about an hour and a half of grading before the pain in my butt from my "sits-bones" (as my Pilates instructor calls 'em) becomes unbearably distracting.
In short: bodies seem not to support grading as well as they might.