I was thinking about this scenario recently. Say you have a time machine, and you use it to go back to late 15th-century England. I use this time period as the example because it’s not too far back to be utterly dissimilar to the modern day, but it’s sufficiently long ago that life would still be different. It’s a good transitional period between the late Middle Ages and the early Renaissance.
Your time machine is big enough for you to take a car, with a full tank of gas. You also have: a flashlight; a fully-charged laptop; a modern-day weapon like an M-16 with a case of ammunition; one set of walkie-talkies; and several packs of batteries.
You start up the time machine, and after a few minutes of time travel, you appear in England in 1490. Let’s say you appear at the court of a high-born noble. At this point the War of the Roses is over, Henry VII is King, and the country is in relative peace. You arrive at the court of the noble, with your time machine and your modern items, dressed in modern clothing. You step out and are immediately surrounded by the nobleman and his servants. Let’s assume these are decently-educated and articulate people who are able to carry on a basic conversation despite the differences in the English dialects.
It seems to me that the first instinct that people would have back then, if faced with a time traveler from the future, would be to assume he is some kind of magician and therefore in league with the Devil or evil in some other way. But we’ll give the Englishmen the benefit of the doubt here and assume they don’t automatically stab you to death - they are frightened, but also curious, so they let you have your say and gather around to listen to your story.
What exactly do you tell them?
Do you tell them that in the future, mankind follows science and not just religion, and that you traveled back in time through the result of pure scientific innovation?
Or do you phrase it in religious terms (for their benefit,) saying that in the future, God has given mankind the ability to do wondrous things with technology, and that you are a representative of God’s kingdom on earth from the future?
I personally would go with the latter. People back then thought in terms of religion - that’s just how it was. I would be happy to speak to them in the language that they understood, if that would mean they would be less likely to suspect me of working black magic or using evil powers to travel back in time or to have the wondrous technology that I brought with me.
Say you are given an audience with the King. How do you address him? How will you demonstrate all the items for him - the laptop, the rifle, the car, walkie-talkies, etc?
What would you do in this situation? I know there are a lot of opportunities for sarcastic jokes here but I ask this question in seriousness.