On May 5th, 1818, Karl Marx, hero of the international proletatiat, was born. His revolution of Socialist theory reverberates throughout the world carries on to this day, in increasing magnitude. Every passing day, he is vindicated. His analysis of Capitalism, development of the theory of Scientific Socialism, and advancements on dialectics to become Dialectical Materialism, have all played a key role in the past century, and have remained ever-more relevant throughout.
He didn't always rock his famous beard, when he was younger he was clean shaven!
Some significant works:
Economic & Philosophic Manuscripts of 1844
The Eighteenth Brumaire of Louis Bonaparte
Critique of the Gotha Programme
Manifesto of the Communist Party (along with Engels)
And, of course, Capital Vol I-III
Interested in Marxism-Leninism, but don't know where to start? Check out my "Read Theory, Darn it!" introductory reading list!
When you survey people on the street, would they use that definition? English isn't a prescriptive language, the definition is what people use it as.
I don't survey people on the street, but they likely would be closer to the definition accepted in academia than the mere buying and selling of goods.
I'll be honest, I don't really know what you're arguing for, here. Capitalism as a term has a very useful and descriptive definition as used by Marx and liberal academics alike. Trying to use Capitalism to refer to concepts like commerce that already have their own words just weakens understanding, rather than strengthening it.
I think that's optimistic. The average persons understanding of these concepts is very limited. They'd most likely call ancient Rome "capitalist", because "they're not communist".
That's the average persons understanding. There's capitalism and there's communism, and communism is when you own nothing and everyone is poor and capitalism is everything not-communism. It's deeply disappointing but that's what you're up against.
So when an intellectual person says "capitalism is human nature", it means something completely different from when an average person says it. To both the 400-years argument won't make sense.
An intellectual will argue that it naturally came about, so it must be human nature for it to arise so prominently. An average person will laugh in your face "because Rome wasn't communist". Neither is correct in their own way, but they're also not going to be convinced by the 400 years argument. One doesn't believe you, the other doesn't care.
Historical examples of proto-socialism or communal living would be a stronger counterpoint imo. Not because it's more correct in a theoretical sense, but because it more directly challenges the core of the opposing sides argument.
This rings true.