I tend to assume the issue is not that they can't explain things, but they don't want to. Plenty of companies spend a lot of money creating manuals to explain e

I tend to assume the issue is not that they can't explain things, but they don't want to. Plenty of companies spend a lot of money creating manuals to explain exactly how everything works, and then hide them away so that potential customers can't look at them. The most common reason seems to be a desire to force you to talk to sales.