You are driving home with a bag of takeout food. You're forced to make a hard stop and the bag flies onto the floor, expelling a single french fry onto the dirty passenger floor mat. In your panic to retreive the bag, the nasty fry somehow escapes back into the bag. You caught a maybe half-second glimpse of half of the fry.
Explain how you use your detective skills to detect and excise the offending fry when you get home
for the record my solution was:
- separate all fries into "still in fry bag vertically (safe)" and "scattered around the takeout bag interior (dangerous)"
- observe the scattered fries for identifying marks similar to the glimpse on the floor
- excise anything from that pool that looks similar (total: 3 fries)
- eat the rest
run the entire bag of fries under water to wash them off
