Different fields have different states of development. When it comes to theoretical physics there are a lot of very smart people who spent a lot of energy in the field, so it's really hard for outsiders to meaningfully compete in the field. It's also very hard for anybody outside of the field to gather meaningful empiric data about related questions.
That's not true in the same sense in medicine. Earlier this year we discovered for example a new muscle. The study of human anatomy is still badly developed and it get's even worse when you don't talk about static anatomy but moving anatomy.
When having a breakthrough idea it might be worthwhile to ask: "Given how I arrived at the idea, what are other people who went through the same path?"
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