Origin of Zero

I think what hit me the most in the articles was how much zero seemed to have evolved over time and how it appeared in multiple spots around the world. I believe the way we decide who discovered it is by telling who came up with the original concept for zero. The person(s) that came up the base concept were the ones to discover it because the person who made up the number couldn't have really done that without that base work done ages before. The way we all come to the same conclusion eventually is the fact that math is flawed without zero. Mathematics just doesn't work out without that crucial number that means nothing. So I think that eventually advanced cultures realized they can't go any further with their idealism's of math and had to evolve it to a new level. I think the Sumerian's were the first people to discover zero because they discovered the base concept that set the ground work for the entirety of zero.