This is not always a good approach. It can only be used as a rule of thumb. Here is a counterexample: I had to go to the hospital because of extreme pain. The

This is not always a good approach. It can only be used as a rule of thumb. Here is a counterexample: I had to go to the hospital because of extreme pain. The doctors were pretty sure that I have some kind of auto immune disease which could have been treated with immunsuppressive drugs. They artificially delayed the treatment. If they had started the treatment immediately I would have felt better sooner but also some symptoms which only manifest itself after a certain amount of time would have never been seen. So for a long time we only had a imprecise diagnosis. It would have been enough to treat it but it would have also hidden many symptoms which were needed for a more precise diagnosis. Especially if you have a chronic disease you want a very precise diagnosis because you will be treated for the rest of your life. If the treatment is not as effective as it could be you will have problems in the long run. So they gave me very strong pain killers and let me rot for 2 weeks or so. Then the treatment began and it took another 3.5 months once I was released from the hospital. I am happy that I now have a better near optimal diagnosis.