Another Day of Diminishing Returns

The Law of Diminishing Returns haunts me.

"... a progressive decrease in the marginal output of a production process as the amount of a single factor of production is increased, while holding the amounts of all other factors of production constant."

"...in all productive processes, adding more of one factor of production, while holding all others constant, will at some point yield lower per-unit returns.  The law of diminishing returns does not imply that adding more of a factor will decrease the total production, a condition known as negative returns, though in fact this is common."

Yes, thank you, Wikipedia for that caveat.  I'm not necessarily a total slug, although it is probable I will be soon.
I'm headed for negative returns ville.    TGIF.