Validity is not to be confused with SoundNess; a sound argument is not only valid, its premises are true as well. Not all valid arguments are "valid" in the LooseAndPopularSense? of this word, meaning "good": not all valid arguments (valid, as this term is used in logic) are good, or successful. Here is an example of a valid but very bad argument:
This follows one of the most common valid ArgumentForm?s, ModusPonens?: if it's the case that P implies Q, and P is the case, then we can infer that Q. Whenever P implies Q and P is the case, then Q must be the case. So, if it really were true that Jimbo's wrongness implied my having simian relations (which of course it's not), and it were true that Jimbo is wrong (plausible), then it would have to be the case that I am a monkey's uncle.