Someone who embraces complexity realizes the tensions are fundamental and cannot be resolved, only dynamically and contextually balanced.

The reductionist says "if we simply push a little deeper, work a little harder, be a little smarter, we can banish the edge cases to ever smaller impacts."

But complexity is non linear. You don't chase down details and fix the whole. If you tighten here it squishes out there (and perhaps more strongly than the original constriction).