I think tolerance is real but not to the extent that some people will try to make you believe... I find smoking after a week or so of not smoking it'll hit me harder but even if I smoke everyday - it'll never become ineffective.
I don't think most people would consider a gram a day to be low amount. I know people smoke more and good for you, I don't care. And at my peak of smoking I would be high the majority of day but no, It's not like I'd smoke 4 blunts a day everyday.
What I'm asking for is some proof. If it really exits then I'm sure people have written about it somewhere and explained how it does. I have yet to read anything.
A gram of weed a day is a pretty low amount dude, like clearly it is smoking everyday and enough to get stoned a couple of times but it is hardly 24/7 blazing being fucking perpetually stoned like a LOT of smokers are.
I would never go so far as to say I felt weed could not get me high but if you compared the high I was getting you to what most people do you could really almost say that I wasn't. It just becomes a really, really mild effect that is hard to notice and thats what I meant in my previous post when I said at a point cannabis tolerance doesn't increase the volume you smoke it just decreases the intensity of its effects.
I ain't trying to be a dick or come across like I am dicksizing my weed smoking habit with yours, because I am not. But in the scheme of things you must realise that a gram of weed in the spectrum of things is not a very large amount for a heavy smoker to go through in a day, not at all...