What does non sequitur mean? There are a lot of terms used in English that are taken straight from the original Latin words. One is "non sequitur". This means "it does not follow".
So here is an example where you might use it:
John: "I think we should explain to our shareholders that the revenue forecast is very positive of the company so we are changing the colours of our logo."
Bob: "That's a non sequitur."