The political science and economic experts in the US have been suffering from chronic hubris ever since the collapse of the Soviet Union. This hubris has infected the Democratic party. The political science and economic experts aren’t learning from their mistakes, and thus neither are the Democrats. Those who do not learn from their mistakes are doomed to repeat them.
The thing about these experts is that these fields have major physics envy where they use complex math to solve these problems which hides massive incorrect assumptions that break everything. They want to be like physics where math can be used to predict what is happening but politics and economics are not controlled by nature but things made up by humans. They are fundamentally more interconnected and random. With these fields its better to be incorrect like all of your peers than being the lone voice that is correct.
My preferred edit is “Happy Spouse, Happy House”