Biology, Culture, Environment.
Right explains the world by Biology. The Left explains the world by Culture. The Liberals explain the wold by Environment.
It is possible that you only need to scoop from one box to find a policy - but...
If a society has not solved a problem for a long time it's likely the solution is in higher dimensions.
Our political order is good at solving problems with 1 factor or 2 factors but I think our weakness appears when we need 3 factors simultaneously because it is not possible to select for that.