Originally Posted by
Trakhak
Given that there's apparently a 50/50 chance of correct fork orientation by a non-cyclist assembler, the true rate of blundering (no. accidentally guessing right + no. accidentally guessing wrong) must be even higher than is represented in Craigslist/Offerup/Facebook ads.
50-50-90 I first heard this during my military service. That is when there is a 50-50 chance of guessing the correct answer, like in a True-False test, there is a 90% chance you would pick the wrong answer.