[loeg]

If the job you are applying for is to work on a rails site or develop a mobile app, I would argue that it is pretty important that you are already familiar with those technologies (and their pitfalls)…

I wouldn't exclude someone unfamiliar with a specific framework, but as an employer you understand that ramping them up to speed is going to take a significant amount of time.

[elbear]

Right and my point still stands. If you don't have the expertise that they require specifically, don't waste your time, or worse, lie.