In medicine, clinicians have to practise evidence-based medicine.
What does that mean?
It means you can’t just carry out a procedure or a treatment, based on your mood, your personal beliefs or what you personally think will work, even if you have strong personal grounds to believe it’d work, or even if you have good intentions.
You get into trouble for doing that.
Good intentions, no matter how pure, is not a defence.
Everything must be evidence based, that is, based on literature from research work done by heroes who devote their lives to doing research, all for the betterment of mankind. (I say heroes and I genuinely meant it, cos most research work is actually relatively poorly remunerated, with a lot of hard work. It’s just shitty work IMO, despite how much the gov tries to promote it and all the life sciences nonsense.)
Amongst the different levels ...
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