I haven't learned yet to take for granted how I'm here instead of somewhere else. Should a raised voice say You! I've learned not to flinch too visibly though I always fear I'm the one being addressed. One weekend many years ago after I'd just got here, two coworkers knocked on the door and asked if I'd like to go out. I looked at them confused and said I was working, which I was. After they left I wondered if I should have. Sometimes it's easier to keep to ourselves or out of the way if not out of sight.