Modes of persuasion
I would be presumptuous, indeed, to present myself against the distinguished gentlemen to whom you have listened if this were but a measuring of ability; but this is not a contest among persons. The humblest citizen in all the land when clad in the armor of a righteous cause is stronger than all the whole hosts of error that they can bring. I come to speak to you in defense of a cause as holy as the cause of liberty—the cause of humanity.
An example would be an outdated advertisement that would have been effective 40 years ago but hasn't aged well by today's standards. If both the advertisement made 40 years ago and the exact same advertisement made today contain the same speaker with the same credentials (ethos), and the same arguments with the same logic (logos), and they both appeal to the same emotions and the same values (pathos), but the reception is completely different, then what has changed is the context in which the presentation was made (kairos).