There seems to be a lot of stuff turning up here about "arrogant know-it-alls" & such. I must live in a different world from you guys. I have seldom encountered those types in my modelling experiences, particularly in the case of those generous folks who teach others to fly. Most modellers, & essentially all of the instructors that I have known, have invariably been helping hands, not arrogant know-it-alls.
I'm beginning to wonder about the sensitive souls who seem to encounter the arrogant types. Could there be some personal insecurity at work there? --- Or even some personally unrecognized arrogance on the part of the hard-done-by students? I have certainly met a number of "students" (I use the term loosely) who didn't want to listen to advice from instructors &/or experienced modellers. I've even met a few who continually offered their own insight & knowledge to their instructors. Some of these guys were so good that they "taught" themselves how to "fly" --- they didn't need no stinkin' instructors.
The trash can was a good source of spare parts for the rest of us.