The Increasing Power of Diminishing Marginal Returns

Chaos likes this post quite a bit: Sharon Astyck of the Energy Bulletin explains why we (the collective "we") don't have the resources (or "money," to be reductionist) to accomplish the tasks we need to in order to address the converging catastrophes that loom in front of us. Anyone who's read Tainter will immediately get it, but the rest of the somnolent public will continue to be clueless. However, a look around will provide ample evidence of the principle of diminishing marginal returns on complexity: freeway building, for one; healthcare, for another. Any others that spring to mind?