'Let me know' — the acronym of the mild request, born in mid-2000s texting and now the way plans are left open across every messaging app: 'lmk if you're free'. The record's entry for the three letters that hand the decision to the other person and then wait, indefinitely.
A reader writes that 'lmk' was standard in office email before it was in texts. The record accepts the correction and notes the office never let it know either.
The record remembers a 2014 group chat that ended with 'lmk' from everyone and a decision from no one, and remembers that the restaurant closed.
What does it mean? Write it the way you would say it out loud.
