2 ms·

Some actions aren’t undoable.

• amelius 8y ago
  "Launch missiles" is the prototypical example, although in reality I hope there is some sort of undo functionality.
  • pmiller2 8y ago
    "Send email" is a more mundane example that's actually likely to occur in real apps.
    • ReverseCold 8y ago
      Some email software (notably, Gmail) allows you to undo by delaying the actual send for a few seconds.