Except his "counter" was "nuh uh, people know it cause they were taught it in high school history class". This of course means nothing. 1000s of things were taught in high school, therefore the general pop knows 1000s of things? No, the average person will forget most of everything they were taught, and wouldn't remember obscure (far from public notice) Sputnik.
I say most don't know what it is, he says most do. No way to prove it, nowhere else to go with it.
And weren't you the guy who posted nothing but a link to a book after I destroyed you on the topic of capitalism? You made a point, I countered it, and you posted a book, and here you are calling me a tool for saying an unprovable argument is unprovable, while you just post a link to a book instead of coming up with a thought of your own. Brilliant.