In response to your update, I believe that visual methods of communicating are superior to words. Ever hear how a picture says 1000 words? Is a description of

In response to your update, I believe that visual methods of communicating are superior to words. Ever hear how a picture says 1000 words? Is a description of a triangle really superior at communicating the concept when compared to a picture of one? All that said the understanding of functions you point is helpful. Especially for someone from a computer science background.