The most serious mistake men make regarding the ordering of society is their failure to comprehend and appreciate the limits of engineering.
They believe that since engineering has enabled us to harness nature and build monuments like expansive bridges, jet airliners, high speed trains. etc. that such engineering principles can be applied to the organization of societies as well, and to the same positive effect.
This is why planned economic schemes like Socialism continue to rear their ugly head, even in the light of their consistent and abysmal failure historically.
The reason this is so, is because men do not behave in accordance with the principles of physics.
It follows different rules and to apply the rules of physics to men is to guarantee failure and suffering.