I don't recall which calculator that I've posted.  I read and research many things that are of interest to me.  I post on several different sites. 

I agree there is much to learn.  Many things we were taught was incorrect and have been debunked. Things accepted as truth today will be proven wrong and replaced with newer research. 

In regards to the calculator the online information agreed with my college text book information. It can be difficult for many to understand. Even with the calculator you still need a lot of luck when you are talking about genetics. If  you ate doing line breeding and can consistently reproduce mirror images it does not take as much luck. That is some tight line breeding.  But if you don't introduce something new into the line it will go extinct. You have to out cross are eventually they won't reproduce.