I like to go to different events, but I find it incredibly difficult to walk up to circles. I don't know the science behind how its done. Should I only do it if there are less girls than guys? should I only walk up to a group if there are 4+ people? where should I stand so its not obvious I'm looking for things they are discussing that I can jump in on? Or should I focus my attention primarily on people that aren't already in a group? Any help on the art of group inclusion would be greatly appreciated.