I'm not sure why you continue to bring up older threads, but yes I believe we do have a difference of opinions. I kind of thought that's what made forums useful tools, though. I certainly don't see it as a bad thing to have different opinions on every thread. Gathering different opinions is the whole point, no?
I wasn't aware there was any such thing as a one day manicure course, as obviously I'm in the US and we don't have anything of the sort. I guess I shouldn't assume that all nail professionals know how to polish professionally, but I think I'll continue giving pros the benefit of the doubt as to not seem to be talking down to anyone, if it's all the same to you.
If Shellac didn't need to be applied any thinner than classic polish, why do the Shellac trainers stress "thin to win"? I just meant to share my experience that after thinning my application of Shellac, I've had better results. Certainly wasn't trying to get into a discussion about training standards across the world.