Then she points out the problems that have occurred when man interferes with nature:
Cane toad was introduced in Australia, to rid it of the cane beetle. Now the cane toad is identified as an intrusive species. French Polynesia had a rat problem, so the government began a program whereby they'd give money to people who killed a rat, and brought in the rat's tail. But what the people figured out was that they'd just chop off the tail, let the rat live, so it could reproduce, thus giving them more rats whose tails they could chop off, to keep their money-making scheme going.