What is the difference between simple substitution of common methods in patents and common sense? Can common sense evaluate the novelty of patents?

Patent examiners often denies the creativity of a patent by "the usual means in this field", and usually no proof is needed. The difference between "common sense" and "common sense" is that common sense is known to all people, while "traditional means" are known to all neighbors. If you know common sense, you can evaluate creativity and novelty, but when evaluating novelty, you need specific comparison, and when you deny creativity by conventional technical means, it is a sentence without specific comparison.