There's nothing wrong with having a filter. If I want to have a deeply technical discussion that requires a decade+ of speciality knowledge to understand, then so be it, that discussion isn't for everyone. Being on the edge of a knowledge domain is difficult enough as it is. Pushing the boundaries of my own knowledge requires like-minded individuals, and stopping to explain kills the flow.
There are plenty of other times when a more open, informal setting is appropriate, and beginners and journeymen are welcome. But not every time.
There are plenty of other times when a more open, informal setting is appropriate, and beginners and journeymen are welcome. But not every time.