That is the way we are constructed, as are all animals. That is the way we learn. But that is also why we are often wrong. One can find discussions of this problem in psychology and philosophy books. The wording seems weak to me.
Creatine is an amino acid produced naturally by the liver and kidneys and stored in muscles.
The supplement is popular among pro and college athletes in the United States, where it is considered a legal alternative to steroids. The U.S. Food and Drug Administration lists it as a food supplement and allows it to be sold with no more restrictions than those on vitamins. Creatine is not listed as a banned substance by the International Olympic Committee, but its sale is illegal in France. High-profile athletes who have admitted to using creatine include the French tennis player Mary Pierce and U.S. baseball star Mark McGwire. The document urged sports governing bodies to consider listing creatine as a banned substance.