[cableshaft]

You've got to be a little careful picking out items from their CV, though, especially if you go back far enough. I barely remember anything I did six months ago, and anything one or two years ago I couldn't explain to you in anything more than a really broad overview, despite being neck deep in the code. I've since moved past that, tackled other projects, stuffed my head full of knowledge of other systems (and hobbies), and all that deep technical information on those projects is long, long gone.

[qwibbler]

If you put it on your resume, its fair game for the interviewer to ask about it.

[cableshaft]

Not disagreeing with you, but just saying there can be legitimate reasons why they don't have deep knowledge on past projects besides "they're a total charlatan, a liar!" It's probably cost me jobs before, and I try to reflect on and refresh my memory on past jobs as best as I can before interviews usually.

I've even gone over notes I took at a couple of my past jobs, and I don't even remember doing a lot of those things even with it written down in my own handwriting.