How Does an Index Get Constructed?

Henry: How does an index get constructed? I think a lot of people don't understand this. So let's take the m s c i world index, which i know meant many funds bench marked themselves against how and why does it workan even like, what is the upper limit of indixes that can be created? You could imagine thousands of different indies, but maybe let's start off with the world index. That op. What was, what was the business at that time? Was it primarily the indux business, or their other business lives t the time you spotted out, yes.