I hear people use the word "unreasonable" a lot on web forums. But it occurs to me that not everyone means the same thing when they say it. There are many common usages of "unreasonable"; which one do you use?
1) "Unreasonable" means "illogical", which in turn means that the conclusions do not logically follow from the premises. Note that this definition is based on logic.
2) "Unreasonable" means "extremist", which means that it sits at one end of a spectrum of popular opinion. Note that this definition has nothing whatsoever to do with logic and everything to do with popularity.
3) "Unreasonable" means "really far from my own opinion". Note that this definition derives from personal hubris (the assumption that all of your opinions must be reasonable).
4) "Unreasonable" means "based on false premises". Note that this definition is not based on logic since the logic may in fact be sound, but rather, it is based on factual accuracy of underlying data.
5) "Unreasonable" is used as a generic insult, much like "stupid", and has no particular definition.
So which one(s) do you use?