Because nobody is tapping you on the shoulder every 10 minutes asking "did you get the email I just sent out?". You also don't see long multi-person meetings i

Because nobody is tapping you on the shoulder every 10 minutes asking "did you get the email I just sent out?". You also don't see long multi-person meetings in coffee shops (well, actually it does happen, and that's just as annoying). If you could train coworkers to respect the explicit and implicit signals that people give off when working and concentrating on something and use some fucking etiquette like keeping the shouting to a minimum or taking long conversations elsewhere, this wouldn't be a problem.