Seems like under that system, some headaches would just go away on their own, without symptoms of cold appearing later, which would mean the probability of cancer goes up. The patient panics, gets checked for cancer (since a recurring headache would hardly be the only symptom), no such disease is found, so there apparently has to be a new category for non-cancer, non-cold headaches.
So usually, the evidence soup has pieces that don’t conform to a theory, and if the stakes are high enough, people will go looking for them and maybe use the BR for it.
Hello, this is the user formerly known as Romashka. I work in a bookstore, read botany articles for pleasure, have a family. I do not expect to post to Discussion, and will probably comment only occasionally. Good luck to everyone.