Ironically, while you're probably correct in programming design, I'm a national master in chess(which requires reasoning and logic), and I know about a handful of chess masters(FM/IM/GM's) that actually smoke dope. Allegedly, it helps to mentally slow the game down and reason each move out into their potential move branches. In the time allowed, they're able to visualize moves several iterations on down and concentrate better on mentally traversing them to figure out their best move.
Finally a reason to speak:) Yes, I too am an avid chess player and find weed aids my focus a lot. I'm by far a master, but weed helps me build a greater general sense of game as a kind of mental landscape. It's interesting. Coding too is a lot easier to get into and it helps me be more creative with the solutions I choose,more experimental.
I've heard about that weed book before - do you actually own a copy yourself? Any good? Or the other book on that link you gave, about meditation and creativity?
Just ordered it....Not my field, but I'm told users in Canada regard this book as the dog's? Anyone else dabbling with the subject matter?
Also, to those here who beleive that it can't possibly help with creativity, try it, you will not be disappointed. I find it hard NOT to be creative on it, it's just that kind of drug. If you have too much or use it badly then obviously it's not going to help, but as long as you use it responsibly, it's a great drug for helping you get back on track on those days when thinking about coding is the last thing you want to do. It gives impetus, creativity, stamina, and in some cases, very strong objectivity about your output too.
