Posts 9 through 15 are no better than posts 1 through 7. (My first post is number 8.)
A partial answer to DasYochid’s reasonable request of me is: most of the economic errors of the posters result from reliance on the “free market” theory of economics. We learned it in Economics 101, but we did not learn, in Eco 101, that economists have been testing it over many years and found that real markets do not behave like the free market of the theory. One simple example is the notion that all participants in a market have complete knowledge of all information relevant to the market. Another is that there are no barriers to entry into the market. A third example is that the effects of taxation are known and understood.
Another source of errors among the posters (other than me, of course) is the failure to distinguish micro- from macroeconomics. All posters, including me, have to balance our household budgets and limit our borrowing and interest costs. Governments are not subject to that requirement in the same way that households are. Many times I have heard successful business owners say, if I ran my business like the government, I would be broke. And that is true. But it does not tell us how governments should behave.
An essential part of any science, especially the dismal one, is testing the theories by looking at the real world and measuring what the theories predict. That is a big part of what economists do. If you don’t follow the testing, you don’t know economics.