When people say things like "we have a wide variety of products" or "product x can run in a variety of modes", what is the lowest number of modes or products which one can comfortably call a variety? Is having 2 things, a red and blue widget say, a satisfactory quantity to call "a variety of widgets" ? If not a simple number, perhaps it would be the level of differences between the things? I could safely declare a variety of widgets (red and blue) but not a variety of products (I just have widgets). Thoughts?
Apologies if this is not really "mathematics" but you folk seem to be the perfect group and this sort of comes down to sets perhaps.