It depends on what a person is looking for at the time and, what kind of person it is. These days, people think that getting told something short and brief means that they know it, but it doesn't mean they actually understand it.
E=MC2 is a very short piece of information and very much to the point, but what background does a person need to actually know what it means?
There is such a thing as excess verbosity and it's got nothing to do with leaving out information that must be spelt out to the intended audience.
Have you ever looked into NLP? it is interesting.
I've heard of it.
It is worth looking into if interested in how language can affect learning and behaviour.