I like to understand things in terms of how they relate to other concepts. I generally use Wikipedia as my ontology. I'm trying to understand the relationship between the words in white, and I use philosophy as the organising concept that it all comes back to. I can automate the process of generating what hypoerlinks links the white words together with a nice app available online (xefer.com). Can someone help illuminate what the white words mean here with reference tot he black words. I mean, if I wanted to differentiate reduction in complexity theory, with forecast, I could explain it most broadly as ne relates to properties and the other relates to what necessary and sufficient...but I don't understand what this even means. Can you think of an alternative way of carrying out my suggested method of analysis?