[buran77]

I think it boils down to "don't use a five dollar word when a fifty cent word will do".

It's not a matter of always using simple language, sometimes that doesn't cut it. Some concepts can't be broken down to the simplest words and still keep the quality of the conversation, the precision, the density of information.

I think it's just better to keep language as simple as it can be, as simple as the topic dictates. Don't complicate it just for the sake of sounding smart if the discussion doesn't require it.