It's not an issue at all. Including the brick false positive (or drywall) you still get a much better test allocation than blindly guessing. Same for distancing

It's not an issue at all. Including the brick false positive (or drywall) you still get a much better test allocation than blindly guessing. Same for distancing allocation: occasional false positive seclusion would have much better cost/benefit than prolonged blanket closure. You don't need to be able to perfectly predict the roulette wheel, you'll already find yourself in an interesting conversation with security if you consistently beat the odds between black and red.