Confused about the S and P and the market

Ok so I am well aware that the S and P is an index that tracks 500 stocks but I kind of had a weird epiphany and I was like does the S and P follow the market or does the market follow the S and P. Since the S and P is something you can speculate on in the futures market doesn't that kind of ruin the whole point of having to track the 500 stocks in the index. And isn't the government bringing an influx of money into the futures market on low volume to keep the market up but doesn't that mean that it's not really tracking the market and the market is behind the S and P. Sorry for the question and would love to hear your feedback

Submitted October 19, 2016 at 10:09PM by Joga-o_o-Bonito http://ift.tt/2eml1Bd