Just a comparison / easier explanation is all i was asking, I hate when I get that answer, when you could of typed up a simple explanation for what it is, instead you type why I need to read more, sorry don't mean to sound rude.
I spend all my time to read to code better, I cant spend time I don't have to learn every detail about the markets too, that is impossible for a human. We cant do it all. That is why I am asking here from financial experts. I am good at one thing, traders are good at another.
Also the reason I think you cannot track every stock in real time is because python would break under such pressure. Python does really poor with async ops/threading, there is also no really good libraries for it as python was designed to be single threaded originally, there are some perhaps Gevent or QT, but everytime I used it I expressed great frustration and wondered why I am using python in the firstplace.