You shouldn't talk about your friends that way. First you tell them they are wasting there time going to college and now this?
No wonder they haven't talked to you since your mid twenties. What have you been up to all of this time? Not taking Linear Algebra I'll bet.
You done spending post after post never even broaching the topic at hand or grasping the most basic line of thought, or are you going to continue to be deliberately obtuse?