Yeah, it’s one of the sort of boring ones, but random capitalization turns up often enough in the examples I find that it’s obviously a real problem for some writers.
It was his last thought before he fell.
Some of you (if you’re paying attention) will have noticed that I occasionally capitalize words that usually aren’t capitalized. Well, there’s a reason for that… The Chicago Manual of Style (7.48) says, “Initial capitals, once used to lend importance to certain words, are now used only ironically.” I use nonstandard capitalization the same way I use fake “trademark” symbols and deliberate misspelling: for irony/sarcasm. (Example: Teh Expertz say people like me are too stoopid and autistic and stuff to use sarcasm the way Real Humans ™ do, so of course I delight in proving them wrong at every opportunity.)