Healthcare outcomes have nothing to do with what system you have and everything to do with what your culture is, and we have one thats more unhealthy than any other developed nation. We are also a more productive economy and healthcare expenditures go up as your economy becomes more productive. We also consume more. The human capital in European countries is also more developed than ours - less poor at the bottom end. I could go on, but to claim that healthcare outcomes and systems are superior because of the system they have is classic correlation vs causation fallacy. Your common sources do not take any of this into account, they just give a cute little graph where France is #2 or some shit and the USA is 14th, and thats all they say. I dont know if France is 2 and the USA is 14th but its something like USA in the teens and then euros somewhere in the top that gets frequently cited all the time. Not to mention the "best" healthcare systems, if we assume for a moment that healthcare systems are positively correlated with outcome like people think they are, are multi payer universal healthcare that is mostly run by private companies which the government regulates and helps pay the cost for then I believe some sort of public option. I dont have the exact details on it but it certainly isnt single payer like everyone wants, and again, I will reiterate that the correlation between government healthcare and outcomes is classic correlation vs causation fallacious thinking. Get rid of the government in all respects and the prices will go down just like they do with everything else.
As for Kansas, well, they went too far, mainly because nobody wants to live in Kansas. If you did the same exact tax plan in California it would be booming. You have to adjust tax policy to location along with the other factors. Not that they shouldnt have lowered the taxes in Kansas, but it was too ambitious, too crazy for its time.
My laptop is running short on batteries so ill keep the rest short. Demand doesnt create long term economic growth, increasing Supply does. Trickle down economics doesnt exist, all economics has supply and demand. You cant just have demand economics or supply economics, it makes no sense. Probably why real economists dont use that term. The rich dont just save, they invest, and if they are hoarding it into offshore accounts, its because the native countries taxes arent friendly enough for them to invest it, loopholes considered.