Depends if it's something dry or wet. If it's something wet or sticky its a no, since it ''absorbs'' any kind of sand, dirt and bugs. If it's chips or something like that it's a yes. when its dry it don't pick up stuff like dirt, and if it does just blow it off.
If you are asking a serious question with germs being your main point then the answer would be the second the food hits the floor it contains hundreds of millions of germs and 5 seconds is a false statement
If you're 100% certain it's clean. Of course, that means nobody has walked there recently (your feet or shoes drag all kinds of germs from other areas) and any cleaning chemicals have dried (you don't want to ingest a chemical).
I would never eat something that fell on the floor. There are germs and bacteria everywhere.
Elle do you mean that lol.. If you send a steak back for not being proper temp you ordered you will not only be counting to 5 but possibly 30 and when you get it back it my be a little more cooked but it was just a hockey puck in the kitchen w/ the chef and the fry cook in other words it's been kicked down the floor from the broiler where the chef is all the way down to low man on the line and back so he can cook it some more for you... If the chef says it's cooked to med or what ever it is... It makes him look bad if you send it back. Your only safe if it's an open kitchen to the public. If your at home your on your own to me its dog food now I don't eat food off floors or if I can't see it cooked and they better be wearing gloves if they touch my food think about it... Well I am a little O.C.D. I just think of those things. But if the miss ellemacgregor will eat it first I will take the second bite of course in her chew print.