@Liberty4Masses I think you are just using poor language here. You mean "perfect" not "accurate".. No data collect will be exhaustive or perfect. It doesn't have to be. Thats the beauty of how the math works. When the data is inaccurate the math detects it and results in very high uncertainty rates that let us know we cant make predictions. When we have good data we likewise know and are more able to act on it. We have tests for this in my field so we can know, it is hardly guess work.

Similarly while the data looses some accuracy over time, that isnt the same as saying it is inaccurate. The data doesn't need to be perfect to get useful results, again thats the beauty of it.

Again im curious where you studied, what field, and what degree. The things your saying seem naive of very basic entry level statistics and economics. That isnt meant as a jab at you, I may just be misunderstanding what your saying. This is why I'd love to see anything you did while studying. Being more technical I'd probably have a better understanding of where your coming from. Because right now it just sounds like you are naive to the basics. I think its really cool you studied the same stuff as me, so would love reading your stuff.