Okay, I know it may sound stupid but I read somewhere (long ago) that relativity puts Newton's 3rd law in confutable state. I don't remember how the article exactly read but I remember that it has some connections with 0 and 9. It was like ( as in my fade memory I remember ) that newton's 3rd law violates (or doesn't connect, or something related) something (sort of mapping I think) between 0 and 9. I am totally confused? Does relativity really discards the 3rd law, and if so, how? What about that 0 and 9 connection (or mapping or whatever) ? What does this all means?