That struck a chord with me. It has been my experience with liberals that they have this (unfounded) sense of superiority. They seem to think they are smarter than their predecessors and contemporaries. This in spite of absolutely no supporting evidence. (other than self-agrandising and mutual admiration societies)
In fact, a case can be easily made that liberals are in fact not as smart as other people, past or present. For you liberal lurkers out there I'll spell it out: don't confuse education and technological advancement with basic intelligence.
In general, liberals tend to have several fundamental failings. They ignore the lessons of the past. Probably due to that self-serving attitude "Things will be different now, we're so much smarter/evolved than they were..." They fail to recognize their own limitations. This is particularly dangerous when they start thinking they should make decisions for the rest of us. They fail to acknowledge human nature. Their ideas and ideals, while stunningly beautiful in theory, fail just as stunningly in the real world, and always will. Finally, they have a remarkable capacity for self-delusion. Everything I've just written is obvious, yet they refuse to see it. Amazing.
I think what goes along with this is imbalance in their childhood. Parents have two basic tools to guide children: the carrot (rewards/praise/etc.), and the stick (punishment). When parents don’t balance those two tools they can easily wind up with kids who grow into liberals.
If you only use the carrot approach, you wind up with a selfish, self centered, egotistical brat. If you only use the stick approach you get basically the same thing only with more of a rebelious approach to life.
I know in my own life, my older brother got too much punishment from my Dad (who, because of always working, was rarely home) and then got too much carrot from my Mom to make up for the punishment from my Dad. As a consequence he rebelled at everything that my Dad stood for.
One of the things that has kept him in the liberal camp is that he never became a Dad himself. (That and going to college and now teaching college.)
So I guess one of the causes for liberals being unbalanced is because they were raised that way.
Good point which I think is the root cause for Libs to double-down on programs or ideas that don't work, the rationale being we didn't do enough of it (spending for instance)and that's why it failed, instead of it was based on previous fallacies from the get go.
I'm in absolute agreement with that. I've thought the same thing myself.