Ok time to sound like Socrates and his love of defining terms. Three and four seasons get bandied about this site but I have no idea what is the meaning of the terms in actual conditions, i.e. wind speed, temperature, snow loading, etc, etc, etc, etc. Just curious if there is a universal standard or even a rough guide say England is the model? Common-sense tells me that one season (say winter) is dramatically different in a country as big as Australia (does it snow every winter and most summers in NT?) without actually even considering the world. In Russia oil freezes and many steels fracture while in England it might mean a bit of snow and lot of rain for most years.
Ps we have metric cups, tea spoons, etc, so is it not time to define the terms or does the imprecision appeal to those that not like been nailed down to specifics as per the "golden ear" brigade that use to haunt HiFi reviews and discussion boards. Or will we see a pinch of winter and three fingers of summer starting to be used as well to establish the suitability of products for conditions.
Just a thought

Cheers Brett
PS ever seen a product advertised as two seasons?