That's a good point. I'll re-think my terminology.
Ok, so the conversation isn't silly.
Ignoring science is silly, however. Here's what I mean. If someone claims that they are sure we are visited by other beings, then ask them simple questions and see if they can answer them.
1. How many stars are in our solar system? (You'll be shocked to find a variety of answers when the real answer is one).
2. Ask them the name of our galaxy. Then ask them to define a galaxy.
3. Ask them how far the closest star is to our planet, followed by the next star. One is 93 million miles. The other is 4.3 light years.
4. Ask them the name of the star closest to our planet (I hope they say The Sun, because otherwise they didn't pass elementary school science).
5. Ask them what a light year is, an Astronomical unit, the speed of light, and the distance/name to the galaxy nearest to ours.
Until they can answer simple, basic-level questions about astronomy, then they aren't even ready for a conversation about whether we are being visited by aliens. It isn't fair for them to cop-out by saying, "well, they have advanced technologies." They need to first know the limits our our own technologies and what is known in physics.
The reason so many people thought the earth was flat when Columbus sailed wasn't due to it being common knowledge. It was due to illiteracy and lack of education. Christopher Columbus certainly never claimed the earth was flat, and neither did Isabella's advisers. Columbus had to lie to his men about how far they traveled each day because they were illiterate and had to believe whatever they were told.
And to Pekka: you wrote the following as a response to me: "Arrogant to think that someone in Harvard is more worthy to study and interact with than a farmer in Iowa."
I very much disagree. It's not arrogant to say that someone with a college education knows more than someone without one. Sure, there are exceptions to the rule, but educated people are definitely worthy of study in comparison to someone who doesn't have the same level of education.
There are those who will say, "Just because you went to college doesn't make you smarter."
They think that because they didn't go to college.
Yes, college actually does make you smarter. Again, there are exceptions to every rule, but education is critical for a society to function. Of course the world needs someone to sweep the floor, but without educated people we don't get cool software that can help us fake UFO photos.