From What Conservatism Means:
There are two problems of which Burke, and conservatives after him, have been acutely aware. The first is that of unintended consequences — that because of the complexity and interconnectedness of things, in initiating change on an ambitious scale, more is almost invariably set in motion than the initiator had in mind, and the result may be quite different from the intended one. Thus, in Burke’s words, “[V]ery plausible schemes with very pleasing commencements have often shameful and lamentable consequences.” To stop elephants from being killed, the ivory trade was banned. This made ivory scarce. Prices went up, and the rewards for poaching became greater. More people engaged in it, and more elephants were killed than before the ban was introduced.The second problem is that of latent function. As well as their apparent functions, institutions often perform other, hidden functions of a very important nature — something that may not become apparent until those institutions have been dismantled.