I've noticed a statistically significant difference in the 2 cable camps:
1. naysayers are almost always engineers, either professionally or via years of hands-on experience in labs, studios, etc. They understand intrinsically the scientific method as well as bias. They can also read scopes.
2.. "audiophile cable" supporters are rarely technical and have no formal training in engineering or the technical sciences, e.g., doctors, lawyers, accountants, business persons, and other generally hard workers that didn't have to go thru the pain of 30-page-long mathematics equations. They may be able to argue the merits of any amendment or perform a cardiac bypass but you ask them to program the clock on a VCR and you've essentially found their kryptonite.