Cause and Effect

Locke talks about how all reasoning concerning matter of fact are founded in the relation of cause and effect. What he is saying is that we can go beyond the evidence of our memory and senses. So if you were to ask a man why he may believe his friend is in another country, what would be his reasons for this if he did not know he really was or not in another country. He might answer with former knowledge he had of that friend talking about wanting to go to that country or promises. Again like before a man stranded on a desart island finds i watch. He did know see or know anyone else on this island but form cause and effect he knows that there must have been someone else there.