It looks like what's at issue is less how long your food stays on the floor and much more how contaminated with bacteria that patch of floor happens to be.
Right after my argument, the justices returned to their conference room and took a vote, and seven justices voted to uphold the Pennsylvania restrictions that were at issue in the case.
Since it is not likely to persuade the materialists who affirm the conditional clause in the first of these hypothetical statements, what is at issue here can be put to an empirical test in the following manner.