Since I'm young and inexperienced I can only say:

There is a word in Sweden that is called personangrepp (roughly attack of person), that is defined as insulting a person without being able to base these insults on any real facts (to call Billy Corgan a completely unmusical person, who can't sing and doesn't know how to play the guitarr can be called attack of perston). Just as you know.

Übereil

Brain: an apparatus with which we think we think.

Ambrose Bierce