You're not going to be a very good statistician or data scientist if you have that mentality. Facebook became a trillionaire over the ability aggregate seemingly unoqie data of billions and provide value to adverts with it.

Like any other engineering, it's not about perfection. Being able to peedict that even 10% of these 340m people do a certain thing a certain way is enough to capture and establish a trend. That's all I'm doing here.