Regarding online poker schools, I just have an opinion that is different to yours. I think most of them are harmful, because they are teaching the old style that no longer works. Poker is a living thing, and it is evolving, it is not static. For example, look at how Daniel Negreanu was playing 10 years ago, and what he was teaching at the time, and how he plays today. Indeed he's a genius, because he has found the strength to abandon his old style and adapt to the new reality. ... Well, that's just my opinion, of course, but if it means something to you, I am a 2 times winner of the Bitcointalk Poker Series. (I know bragging is wrong, but I hope it's relevant, just this once.

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Just interesting for me. I`m playing soccer for more then 15 years and i see how it changes. I see how change boots, ball, training ground. It is the one side. On the other side - team work between players in different situations. And the rules changes too.
But when you playing poker - you playing with the same rules and same cards.
Can it be so, that the old strategy will be better then new? Even because the new player don`t know about it?
Yes, anything can happen, because luck is a factor in the game of poker.
An absolute newbie can beat the best poker player in the world in one game or even more. But the more games played, the more obvious the importance of experience and skill, so a weak player, or someone using an outdated strategy, doesn't stand a chance in the long run.
Surely, we spoke about random

And what about tournament? Old school player have a strategy, he knows the game, he can bluff. As for me - if he catch some luck, his chances to win are enough high.
But i meant another thing. What changes in the strategy if nothing changes technically? For example: I`ve read a book about 10 years ago. There was a base strategy from the start of the game: depending on the seat at the table and starting cards the player have a decision to raise, to check, or to drop his cards.
Is it constant or element of changing strategy?It's not constant, that's what I'm trying to say.

In the old days, like 5-6 years ago and more, the best players were much more bluff oriented than they are today. It was considered that a good player could play(and win) with any pocket cards. First you wait for a miracle, so that your 67s makes you holding a straight flush, or quads, or full house. Then if it doesn't happen, bluff the hell out of it and grab the pot.

^^^This was their motto. And they were right at the time. Some people won millions of dollars following this amazing strategy. But the thing is that it's not working anymore.