There is a good deal of evidence that other and less beneficent motives sometimes make its wheels go round, tinker with its governors, and handle monkey wrenches carelessly.
有大量的证据表明，其它一些不那么悲悯的动机有时候也会驱动这个机制，随心所欲的乱来一通。
3
You may makeamonkey out of someone when you make that person look foolish. Some people makeamonkey out of themselves by acting foolish or silly.