an unknown and unexplored region
anyone who does not belong in the environment in which they are found
a variable whose values are solutions of an equation
not known
being or having an unknown or unnamed source
not known to exist
not famous or acclaimed
not known before
"Often sound advice turns out to be totally wrong. Sometimes things turn out in such a way that only a fool would predict. Which is why fools, too, have their place in analysis and debate."
