It is preposterous to claim "These two are similar, but your word ‘unambiguously’ is hilariously wrong".  Remember "Words have meaning" Unambiguous - Not ambiguous Ambiguous - Open to or having several possible meanings or interpretations; equivocal In any normal sense, nothing ambiguous in this statement: (unless written on Nov-11-2018) America will be Unified Again Nov-11-2018 You see this on your Ticket: When do you think the ship will leave. Cruise Ship will depart Nov-11-2018 If you show up on Nov-12, present your ticket, do you think you would be able to argue that the statement .... will depart Nov-11-2018 was ambiguous and you thought it mean Nov 12. Or that instead of departing, you thought this indicated the ship would be painted on Nov-11. Of course not, and to suggest otherwise is silly.  Now, as with Q 1357 (11.11 provided as strategic marker), if receive a second notice in the mail before Nov-11 that says: Cruise ship will depart Nov-11-2018 is just some random date that we assigned which could mean anything we want it to mean, I would not know when the ship was actually departing.