Interestingly, when I was first diagnosed in 1977, I (or rather, my mother) had to carb count in a way. Back then,it was X insulin = Y carbs per meal (so the insulin lead the carbs, rather than the other way round as it is now). And I just kept on doing that, through the changes in advice (you can eat normally, just sensibly/dont eat too many carbs, but dont mind what/and back round to carb counting). So when carb counting as we know it came into trend, I was one step ahead of the game (already knowing how much things counted/how to interpret idiot labelling).
@mike – I started how I’m doing it now through a course run by my diabetic clinic (which I only did because it was a prerequisite to being considered for a pump, but am really glad I did it now!)