Even the best logic in the world can result in terrible outcomes if the basic premises or the assumptions behind those premises are incorrect or not factually accurate.
The biggest flaws behind “libertarian” ideals lie in certain underlying assumptions. The first is that we all have equal power. The second assumption is that those with power and ability earned it. The third assumption is that, even if we don’t have power, we have no right to band together to stop the abuse of power by others through government because it restricts the freedom of those with more power and/or ability. The fourth unspoken assumption is that life is unfair, but that all those without power and resources are personally responsible for their situation, and that it is entirely up to them to improve their situation. The fifth assumption is that society bears no or limited responsibility for providing opportunities for those with less power or ability.
But Libertarians aren’t the only ones with unexamined assumptions. Liberals have more than a few as well. There’s the assumption that more government funding will solve every problem. The assumption that more regulation is better, when it’s clear, just by examining California, that there’s a definite limit to what regulation can do, and that overregulation creates more problems than it solves. There’s also the assumption that government mandates can create economic processes. Or that you can change economics and government by forcing cultural mores on people, when all historical evidence suggests that economics drive culture, rather than the other way around.
Conservatives generally assume that a largely unregulated marketplace provides the best economic outcomes, even though history has consistently shown this is not so, but conservatives still tend to persist in making that assumption.
A huge percentage of Americans from all groups are making the assumption that a college education is an automatic passport to economic success because it has been in the past, but they ignore the facts that a diploma no longer necessarily equals an education and that we’re already creating more college graduates than there are jobs for them.
The states of the U.S. west and southwest made the assumption that the water flows of western rivers, especially the Colorado River, would remain as they were in the early years of the twentieth century, and planned on that basis – except geological and ecologic studies have shown that the water flows during that period were the highest in the last several thousand years. Now, western cities and states are facing drought and crisis because that assumption wasn’t questioned early enough or rigorously enough.
History is littered with assumptions that should have been examined… and weren’t, and we’re continuing to make that mistake.