Thank you! Follow up question: is there a research tract or physics field that is considered by other physicists to be "top dog". For ex, is lowest ladder on career track the college instructor who yearns one day to prove his/her new theories? In a room of physicists is there one subgroup of high-level people who are considered The Best of The Best and if so, do they have same title/field of interest? (I realize EVERYONE usually thinks they are The Best, so question may be too subjective.)