
Pretend you are stuck on an island with Bob. You two started off strangers, but after years of being stuck on the island together, you think of him as a friend. You believe him to be honest; you can hang on his every word. Over the years you’ve gotten lazy, and have found it convenient that Bob would go out, explore the island, and come back with a report for you. You rely on Bob for information. Bob is your source. (more…)