Not possible it's an "I bumped it" type of accident, maybe. It's quite possible it's a "performed the wrong muscle memory at the worst possible moment" type of

Not possible it's an "I bumped it" type of accident, maybe. It's quite possible it's a "performed the wrong muscle memory at the worst possible moment" type of accident. This is unlikely, but anyone who thinks such a mistake is impossible doesn't know anything about human factors. Unlikely just means "low probability." There are thousands of flights per day, so it's only a matter of time.