As opposed to someone who has no experience with the game of baseball at all, claims to know everything because faulty stats tell him so, yet doesn't even know the new CBA regulations before bringing up the old ones in terms of the values of keeping Dempster around to get "two picks" in next year's draft.
Experience means so little, that it's typically the factor that makes one player far more valuable than a younger, lesser experienced player of equal skills and talent. Experience means so little, that we're talking about trading away a veteran pitcher that has, at best, 3 years left in his arm for possibly 2 inexperienced pitchers with potentially greater upside.
Sure, some inexperienced people manage to compile useable and worthwhile knowledge. However, it's rare... sense it's usually the obtaining of experience that forges the skills... not what you may have learned from book, website, or lesser league. Even in those rare cases, short-term experience usually fills in the blanks not learned...or even mentioned... in previous means of knowledge acquisition.