What you do when the accumulated knowledge, is wrong?<p>Example: I&#x27;ve been getting hostile responses on StackOverflow when asked about RDTSC and MS QPC, and about some strange behaviour of XCode compiler.<p>Found out that both MS and Apple has wrong documentation, and that XCode compiler indeed does things differently than the official LLVM distribution (And way different from the published Obj-C standard).<p>How I am supposed to know that without asking someone that already knows?