Say I meet some Joe on the street. He tells me his name is George. I believe him. Am I irrational for believing him without requiring a driver's license, social security card, and birth certificate? I'd say no. I believe him because him saying his name is George is plausible. It's plausible because:
1) George is a name that has been used before. Therefore it is plausible that his name is George.
2) He is a person. People generally have names. Therefore it is plausible that he has a name.
3) I've just met the guy. Therefore it is more plausible that he is telling me the truth than it is that he is lying.
Therefore, since it is highly plausible that his name is George, me believing him when he says his name is George is rational.
1) George is a name that has been used before. Therefore it is plausible that his name is George.
2) He is a person. People generally have names. Therefore it is plausible that he has a name.
3) I've just met the guy. Therefore it is more plausible that he is telling me the truth than it is that he is lying.
Therefore, since it is highly plausible that his name is George, me believing him when he says his name is George is rational.
