 One aspect that could be very useful when you're starting to deal with these multi-dimensional rays is a concept known As a numeration Now big fancy $5 work the entire idea to this is Creating variables that are just representing your particular Values and what I mean by that is we're dealing with Distances from one city to the next but as you can sort of see here We don't have that going on anywhere. So if I were to cheat and let me just Do some that for a second if we were to cheat I Could come in and start giving values to each one of those indices In our case. So for example Something like Chicago. That's the 0th row of my Sort of distance table. So I would just make a Chicago variable And then I could do the same for Boston and New York and Atlanta and Then me on me. That's how you say it. I know Dallas and Houston Okay, so why would we want to do this again? It's now that instead of referencing just the variable or the index number what I could do in this case is now that I've built those Points or those variables I could instead of saying for here I could actually say oh, well, I want to know the location from Miami to New York New York and I should still see the same value 1549 but now I'm just working off of variables that again I'm never going to change but they they can help serve as just more explain a explanitive They offer a more explainable meaning to what the variables are referencing So again Miami, we know that that is always going to be at the fourth Location either on the row or column so we can work off of that