Being observant and remembering past experience to avoid one particular incident a kind of things we can apply in gambling but the modern gambling environments are highly ultra faster one which will not allow you to think over anything so that they can keep you always in excited level so that you can gamble and lose and then move away.
Keeping you excited may lead into getting addiction too. Yes, it is very dangerous one other than how houses are enforcing you not to able to apply your "experiences". I do see widely people are emphasizing that experience is not a key in gambling but the actual truth is, it is still a key but you cannot use it to unlock anything out of aggressiveness and rushing. I agree being observant will help in gambling but for that we must need enough time.
Let me think about your perspective's online application : if you are good in observing then you may get chances to guess the seeds and then you may bet accordingly. It is not easier as it sounds but I heard someone guessed (probably might have hacked) some house's seed generation sequences and made 2000+ bitcoins.