"Shaw Common Sense never bowled me over."

Thanks for the uncalled-for barb (tediously, yet again). As it happens, I've never assumed a mantle of "common sense" in my life. I once worked with a man on the parks department when I was a student. One day, he roared at me that he didn't need no universities or degrees or exams because HE had a degree in "common sense," vigorously tapping his temple. Six months later (after a sacking for doing a terrible job and absconding to the pub for hours every day when he should have been at work) his alcoholism had killed him. Since then I've always thought that resort to common sense is the territory of rogues and charlatans. I want to make arguments and to be argued back at, thanks. I enjoy that. What I don't enjoy is lazy insults dressed up as argument. As above.

"...a breach of common courtesy." I thought it was supposed to be about protecting people...