Being an expert in one area is far more beneficial than having broad knowledge. One of the main perks is being able earn reputation in one area(your area of exp

Being an expert in one area is far more beneficial than having broad knowledge. One of the main perks is being able earn reputation in one area(your area of expertise) in order to spend it in another. Many people see through this, but not enough that the payoff isn't worth it. Far too many people see it as simply, "This person is knowledgeable of X, so they must also be knowledgeable of Y." Exploited tactfully, this is a substantial opportunity compared to being simply pretty good at several things.