the.com/dead air

The sound of everyone realizing the meeting should have been an email.

means A silence that drags on too long in a conversation, broadcast, or meeting — the awkward gap where someone was supposed to say something and didn't.

from Straight out of radio and broadcasting jargon, where 'dead air' meant exactly what it sounds like: an unplanned silence on the airwaves when no sound was being transmitted — a cardinal sin for broadcasters, since silence reads to listeners as the station going off the air. The term spread from control rooms into everyday speech for any conversational void nobody fills.

radio origin
Broadcasters feared it more than profanity
true cost
FCC once fined stations for silence over 10 seconds
podcast era
Now edited out, but texting revived it live
negotiation trick
Silence pressures the other side to talk first
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