David,
Are you saying that all calls are just like using scents. That if a deer comes in its because of chance?

If it is, then I highly disagree.

It is much easier to duplicate the sound a deer makes and fool them than it is to store pee in a bottle and fool their nose. I have too much respect for a deers nose an will very rarely use scents. But calls on the other hand have their place and time. I can name at least 12 different bucks that I knowlingly called in this year. Mainly using "the can". But also with rattling and grunting.