Well here are a few possibilities.
- No spacefaring human will ever wear a red shirt.
- No spacefaring human will ever ask, “What could possibly go wrong?”
- When communicating with the soldiers of any social organization that might be termed an ‘empire’ over the radio humans begin all communications with the greeting, “We’re fine. We’re all fine here, now, thank you. How are you?
What do you think will be our 'black cat' of space?