Dude, I'm sorry but you're being purposefully obtuse. Your initial comment was a simple and lazy "go read Marx" when I'm responding saying that central planning being better than market-based economy. I ask about where Marx talks about central-planning and market-based economies, and you answer with a tirade that has nothing to do with central planning whatsoever, as if I were defending that the Feudalist mode of production and distribution were more efficient than markets in capitalism. It's just not the topic we were talking about, we were clearly engaged from the start on a conversation about central planning versus market economies, and you suddenly shift to "markets take over pre-capitalist societies". Please just admit Marx never said that markets are better than central planning.

"Central planning as an economic system is when a corporation vertically integrates, and the more it vertically integrates, the more centrally planned the economy is."

And again, purposefully reductionist and obtuse. I explicitly mentioned using the techniques for central planning devised by behemoths the size of countries like Amazon or Walmart, to make better central planning than your outdated 50-year-old USSR idea of it, as many socialists propose (again showing you haven't read about ideas of central planning in socialism from the past 30 years), in a democratic fashion. I bet my ass again that you haven't read a single modern text on possibilities of economic planning, which is cool, but don't try to teach others how bad it is when you haven't even done the most superficial research beyond "USSR bad". The idea isn't "let's copy what Amazon does", it's "the historical critique against planned economies is based on the economic calculation problem (which you're proving you've never even heard of before), and modern digital behemoths prove beyond refutal that the problem is already solved, so let's use this knowledge and these tools to bring about a better, more efficient, more democratically organised economy for everyone". Your reductionist point basically amounts to "companies are bad therefore we shouldn't take their innovations", as if capitalism hadn't been the one to invent the industrial revolution. Big capitalist companies providing us with the tools of economic planning is exactly one of the contradictions of capitalism.