There was once a young fisheries manager in charge of a pristine trout stream high in the Sierra Nevada. Well, almost pristine. You see, the stream, though pretty in appearance, contained nothing but stunted, invasive brook trout. And so, the fishery manager decided to improve things. He obtained a batch of native California golden trout and dumped them in the stream. Later in the year, when he surveyed the fish population, not a single golden trout remained. The stunted brook trout had out-competed and starved them all to death. He tried again, this time with more fish, planted in multiple locations. Again, the stunted brook trout ate them out of house and home. He tried a third time. This time, he embarked on a comprehensive program of habitat improvement beforehand and selected the finest golden trout he could find. But once again, the brook trout out-competed them and the golden trout didn’t survive.
At his wit’s end, he called the senior fisheries manager from two drainages over. “You silly goose,” said the senior fisheries manager. “You forgot to kill the stunted brook trout first. It’s rule number one of good preaching.”
“Good preaching, sir?” the young fisheries manager replied.
“Did I say preaching? Excuse me, I meant good native trout restoration. Now go get some rotenone and remove the idolatrous misconceptions of those stunted brook trout.”
The young fisheries manager decided not to question the idolatry of brook trout and went out to do as he was told. Let the one who has ears to hear, listen! The End.