One morning a man walks out of his house to get his morning paper and sees a new guy moving in next door, so he decides to go have a talk with him.
Man: Hi there, welcome to the neighborhood.
New Neighbor: Thank you, looks like I'll be your neighbor.
Man: So what do you do for a living?
New Neighbor: I work at the Institute for Deductive Reasoning.
Man: Deductive reasoning. What's that?
New Neighbor: Its kind of hard to explain. Let me show you. I see that you have a dog house in your back yard. By that I deduce that you have a dog.
Man: Yep.
New Neighbor: Since you have a dog, I deduce that you have children.
Man: Yes I do.
New Neighbor: Since you have children, I deduce that you are a heterosexual.
Man: Thats true.
New Neighbor: Well, THAT'S deductive reasoning.
Man: Thats pretty neat.
Later on that day, the man stops by his other neighbor's house to talk about the new guy.
Man: You see that guy moving in over there?
Other Neighbor: Yeah.
Man: He works at the Institute for Deductive Reasoning.
Other Neighbor: Deductive reasoning? What the hell is that?
Man: Its kind of hard to explain. Let me show you. Do you have a dog?
Other Neighbor: No.
Man: ******.