I know some things about some things, but an expert? I don't know that I'm an expert in anything at all. I have been blessed with having a lot of super knowledgeable sources to get the right answers, though.
I'm not an expert in a lot of things, so I'll either keep my mouth shut/not type or if I do, I'll ask questions. Other times I'll have a opinion I'll offer, but be open to new info as I'm not an expert. Some stuff isn't about being an expert, but having an opinion. Of course I am not an expert in any of this, I'm just offering my opinion.
Actually, not everyone has become an expert at everything. So, that actually makes you not an expert about everyone becoming an expert. I'm not saying I'm an expert at everything, I am somewhat of an expert at perceiving things but sharing those perceptions doesn't mean I'm an expert.
If you say things with authority and conviction, most people will believe you know what you're talking about. Unless you're talking to an expert....
Expert about anything? not sure. Pretty knowledgeable? Some stuff. None of these things include basses or bass gear though.... Though i'm improving. All the stuff i'm very knowledgeable about are of course completely geeky and not useful in life. Video games, gamebooks, movies....
This is one of the reasons I kinda hate facebook and the like. I feel like social networks are not for connecting with people, but to serve to the sole purpose of arguing about themes you don't quite understand just for the sake of winning a discussion.