ah yeah. A reson why more I was just asking was becouse He did that tutorial befor the "Ramp shader" was put in to maya 5. The ramp shader can do what he did just a bit eazyer if you ask me. But eather way works.

If your intrested in his paper though :
https://www.optidigit.com/stevens/shadetut.html
PS I mentioned he messed up on one thing. Not really but he did forget to give the corect values for the clamp in that network.

PSS. thanks for your kind words.. yeah drop buy the thread and leave a note, always intrested in your thoughts.