Do you prefer the "know it all" type, or the "assuming" type?

TheSpaceGnome
I'm into know it alls, the smarter, the more interesting.

People who make assumptions and view them as facts typically get on my nerves, especially if they get mad when they are wrong about something. But someone who knows more than me in most cases about useful topics (and can prove/explain it), is more often a great conversationalist and I tend to get along with them better.
Updates
1 y
Definition key:

Know it all: A person who almost always chooses to verify/prove something before claiming it's true or false, resulting in both a higher knowledge base than average, and far less instances of being wrong when they make a claim about something, thus appearing at face value to "know it all".

Assumer: A person who almost never chooses to verify something before thinking or claiming it to be true or false, and thus has a large number of instances of being wrong, but trusts more.
Do you prefer the "know it all" type, or the "assuming" type?
9 Opinion