I don’t believe this even happened. If it was April 1st and I had to choose a stupid parody story, this would be it. But it’s not and it isn’t.
The ‘five second rule‘ is an idiot’s rule. Drop some food, pick it up within five seconds and it’s safe to eat. It’s clear and obvious rubbish. It does not matter how long food is on the chopping board or on the floor. All that matters is what it’s lying on.
Bacteria can grow pretty fast – in the lab, with no competition and with optimal temperature and limitless nutrients. In those conditions E. coli can double its population every 20 minutes. Proteus mirabilis is so fast you can actually watch the colony spread on a plate of blood agar. But that’s in perfect lab conditions. They can’t do that in real life.
In five seconds they can’t do anything at all. If food is on a surface contaminated with bacteria for five seconds then it will pick up some bacteria. They will not instantly colonise the food. That takes time and the conditions, especially for a pathogen, are far from optimal.
Your chopping board isn’t sterile. Unless you autoclave it. It should be less contaminated than the floor. When I’ve just cleaned the floor it’s safe to eat from but after I’ve walked on it, especially if I’ve been in the garden, it’s not safe any more.
They actually tested this. A total urban legend style pile of hoirseshit. They really tried to test it. They spent time and money testing it. And the answer was wrong.
It is not the time on the ground. It is not the type of food. It’s all about what it lands in. All about that base. No trouble.
Sure, wet food will pick up more bacteria than dry food but they won’t grow in five seconds.
This ‘five second’ thing never needed to be debunked. It was utter bunk to start with. Obvious bunk. And yet money, lots of money, was spent to get a silly answer
Science is over. There can’t be anything credible left now.