Actually I understand statistics. Which means that if I determine that an event has a 10% chance of happening, then it happens, it doesn't mean my determination was wrong. If I determine that something has a 10% chance of happening, and that same thing happens over and over at a 60% rate, then I would suspect my determination was wrong and try to figure out why. Brexit was a one-time event and no professional was predicting a Stay with 100% certainty that I know of. Therefore it is not a repudiation of all polls in general if the low probability event happened. U.S. Presidential elections have a lot more history, i.e. we've done this kind of poll a number of times and if a poll is wrong over and over we have a better idea that is isn't reliable. But it is still a small sample size and there are differences between elections, so a good polling aggregator (like fivethirtyeight) will take that into account when determining confidence intervals.
I'm not sure there is such a thing as a "liberal brain", but if that means I understand statistics and use them properly than I guess I'm guilty as charged (I know plenty of conservatives who know statistics better than me though, and I think they'd be offended if you called them "liberal brains"!). Since I just not only showed that I believe there is a possibility I am wrong, but actually quantified the chance that I think I'm wrong, your comments are demonstrably false. Again, once you understand statistics you can engage in an intelligent conversation that involves them, until then you're just exposing your lack of understanding of this subject that requires a little effort on your part to learn.
