How carbon paper made a second copy
Before office copiers, making a duplicate could happen while a letter was being written. A sheet of carbon paper—coated with transferable pigment—went between the original and a second sheet. Pressure from a pen or typewriter key left the same words on both pages, so the writer could keep or send a copy without composing the document twice.
That copy was called a carbon copy, shortened to “cc.” In correspondence, a note such as “cc: Jordan Lee” told the sender and reader that another person was receiving a copy of the letter.
What the label means in email
Email kept the old abbreviation after the carbon paper disappeared. Put someone in the CC field and the message is delivered to that person as a copy; other recipients can see that person’s address. The field therefore does more than add another destination: it makes the wider circulation of the message visible.
That visibility can help everyone understand who has been kept in the loop, but it also changes the social meaning of sending a copy. A CC can signal that someone is informed without making them the main person expected to respond. The label’s physical origin is now easy to miss, yet its basic idea survives: one message, distributed to additional readers.
