law of diminishing returns

Even if the ploy worked for Tyler, subsequent artists could experience the law of diminishing returns.

"My thought on going after knives themselves is that it is a law of diminishing returns," Mr Garratt added.

It is at this point, and perhaps even earlier, where "Heart of Stone" starts to suffer from the law of diminishing returns.

But the Middle Kingdom long ago started running up against the law of diminishing returns when it comes to endlessly increasing investment.

Their currency might begin to wane as they struggle with the law of diminishing returns.