I don't think that evidence is what would determine if it's worth of scientific study. For me it's testability the criteria. If the thesis is testable it's wort

I don't think that evidence is what would determine if it's worth of scientific study. For me it's testability the criteria. If the thesis is testable it's worth of scientific study because we will learn something form the test result. If a thesis is not testable, it's just an idea in millions (i.e. existence of God). The validity will remain undetermined and there is nothing to learn from studying it. The concept of evidence defines a narrower scope. The testability is determined by the existence of constrains that must be satisfied.