Well, looking up something on Google is very easy. I know when I want to know something, I don't expect a stranger to spoon feed me information that takes a few seconds to pull up.
If you disagree with a person's point, you're more than welcome to refute it with your own evidence.
If the other user doesn't want to provide sources, I won't really be convinced. That's me giving them a chance to back up what they were saying, which someone else did. You can stop policing what people say on here now, thanks.