Professional banter is as old as professions. This is a dramatization of my idle chatter on Saturday, when I bumped into someone that does condensed matter physics for a living. Bear in mind that this was a fun conversation and we were laughing all around.
Other person: I heard you do physics.
Other person: What kind of physics?
Me: I work on high energy theory, more precisely string theory and such.
Other person: Ha ha. That’s not considered to be `physics’ in my community.
Me: I’m also interested in quantum computing …
Other person: There is still hope for you.
Well, seeing how many times I’ve heard the phrase “that’s not physics” uttered in different contexts when talking about different sub-communities of physicists as relating to each other I can happily say that I don’t do physics, even though I do.