hierarchy of jobs based on how you spend time

computer paper work - shuffle bits paper. long time in front of a computer, solo, interspersed with probably pointless meetings.

servicing things - interacting with things in a physical manner, but more solo than "serving people role" eg cleaning, baggage handling, brick laying, mechanic.

serving people - interacting with people in a potentially superficial but possibly deeper way, interspersed with some cleaning or tedious tasks. eg bar, photography, medecine