and he wrote his article and that was in the annalen der physik, the premier science journal. for example, if i say the train arrived at 7:00 i mean something like this. the point of a small bit of watch points to a seven. okay. that's just wonderful. the same thing is true, everybody who can understand everything in my book. i put in some equation for people who want to go further, mostly they are in the appendix. you don't have to look at them. in fact, you could jump around the book. go to what you want to read. if there's some term the lexus and chicken i did a really good index. most book these days have wrote several indices. i insist on doing my own index. very good. okay, what are we? this is something original with me which i have taught in my classes many, many times. i call it the tacky on murder. so tacky on is hypothetical particle that travels faster than the speed of light. wait a minute, nothing can travel faster than speed of light. it's not a law of physics. what the physical law says is nothing can travel at the speed of light unless it has zero mask. you can