I work a factory job. The environment isn't too bad, loud machines everywhere and not a lot of people in my department, so I get to be alone and absorbed in thought while doing repetitive tasks for most of my shift. Work can be quite repetitive at times, often doing the same thing for hours on end, so it's easy to turn on autopilot and just shut myself off from the rest of the world while still working. The only time that communication is really necessary is when relaying information to other workers, but everything has a place and/or a label so it's all good. I've worked retail businesses before and I can say that my current job is way better than having to communicate with customers all the time.