A programmer with a goodly sense of humor snuck that through the QA cycle, aided and abetted by the QA team (assuming they read all of the choices)....
Oh - If I wanted to nitpick anything, I'd argue that "Inaccuracies caused by minor things such as the thickness of the cans..." isn't really the same...
This is incoherent nonsense. You can, I suppose, choose to define vacuum as meaning the space between particles but it is a rather odd, non-standard...
And Marina Sirtis's husband, apparently, whom I declined to write an obituary about because I'd already written two that day and don't know anything...