The Crucible Act 2

"That bloody mongrel Walcott charge her. Y’see, he buy a pig of my wife four or five year ago, and the pig died soon after. So he come dancin’ in for his money back. So my Martha, she says to him, “Walcott, if you haven’t the wit to feed a pig properly, you’ll not live to own many,” she says. Now he goes to court and claims that from that day to this he cannot keep a pig alive for more than four weeks because my Martha bewitch them with her books!"
- Giles
This so called evidence is pure stupidity, all that Martha Corey said was that yes, it would make sense that his pig died seeing that he didn't feed it, and if he continued to not feed his pigs then they would continue to die. That is how the world works, it is no phenomenon, and every fool knows that. There is no way that any sane person would (or should) consider that valid evidence, but when fear controls the hearts of men, sanity and common sense are thrown out the window as seen by Walcott's testimony.