You gotta be careful too, because there are a lot of these research methods, like the rapid prototyping, like the ideation, like the brainstorming methods, like the ethnography, and so on, there is actually no real evidence that it makes a difference.
[snip]
You know what Steve jobs did when he arrived? He fired all of us! And guess what resulted? Better products! Which have revolutionized the way we use machines. And he fired the usability groups as well.
Don Norman at IIT Design Research Conference 2010
and thus explains my inability to engage with usability people.
Also, reading The Design of Everyday Things will be good for you