I was reading this WikiHow article on how to become more Vulcan-like and the 7th step is
When speaking, do not use contractions! Vulcans believe contractions in sentences are illogical.
I don't get it (I also have no idea where they are getting this from, though I'll take it on faith that it's not entirely made up).
Why would contractions be considered illogical? They convey the same meaning in a more parsimonious manner, saving time and energy. Isn't that logical?