I'd agree with the OP - I'd never thought about it like that before. My addition to the theory would be that left & right look identify the issue from different

I'd agree with the OP - I'd never thought about it like that before. My addition to the theory would be that left & right look identify the issue from different perspectives. e.g. You can look at the planet as whole today, and see there are massive disparities - then try to drill down and work out how to fix it holistically. Or, you can look at those immediately around you, sort that out, and hope that all people do this and it will ultimately ripple up.