I’m sure you know the “five-second rule.” You know the idea that if you drop a delicious bite of food on the floor, dirt and germs don’t have enough time to contaminate it. Parents sometimes apply this rule to pacifiers, although I doubt that first-time parents would do so! The history of the five-second rule is difficult to trace. One legend attributes the rule to Genghis Khan, who declared that food could be on the ground for five hours and still be safe to eat.
But a recent experiment should permanently debunk the five-second rule. Professor Donald W. Schaffner, a food microbiologist at Rutgers University, reported that a two-year study concluded that no matter how fast you pick up food that falls on the floor, you will pick up bacteria with it. You can check it out for yourself in his journal article “Is the Five-Second Rule Real?” found in the always exciting Journal for Applied and Environmental Microbiology. (I did check it out. It’s a 22-page document complete with charts and scientific diagrams. Ugh!)
Professor Schaffner tested four surfaces — stainless steel, ceramic tile, wood, and carpet — and four different foods: cut watermelon, bread, buttered bread, and strawberry gummy candy. They were dropped from a height of five inches onto surfaces treated with a bacteria. The researchers tested four contract times — less than one second and five, thirty, and three hundred seconds. A total of 128 possible combinations of surface, food, and seconds were replicated twenty times each, yielding 2,560 measurements. So after those 2,560 drops they found that fallen food had not escaped contamination, leading Professor Schaffner to conclude, “Bacteria can contaminate instantaneously.” In other words, they debunked the legendary five-second rule.
My first reaction: Really? You actually conducted a two-year study on this? And why conduct any phase of this experiment for thirty seconds, let alone three hundred seconds?
Yet I will give Professor Schaffner credit for going to the effort of disproving the five-second rule rather than blindly accepting it as fact. And it makes me question other things that we blindly adopt without critical study. What cultural and lifestyle beliefs have you adopted without critical study? What theological ideas and beliefs have you assumed were true because someone told you they were true?
We live in critical times. We must be discerning. We must remain true to the Lord Jesus. There is no middle ground.
1 Beloved, do not believe every spirit, but test the spirits to see whether they are from God, for many false prophets have gone out into the world.
2 By this you know the Spirit of God: every spirit that confesses that Jesus Christ has come in the flesh is from God,
3 and every spirit that does not confess Jesus is not from God. This is the spirit of the antichrist, which you heard was coming and now is in the world already.
4 Little children, you are from God and have overcome them, for he who is in you is greater than he who is in the world.
5 They are from the world; therefore they speak from the world, and the world listens to them.
6 We are from God. Whoever knows God listens to us; whoever is not from God does not listen to us. By this we know the Spirit of truth and the spirit of error.
1 John 4:1-6 (ESV)
Because of Jesus,
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