After reading 'My failure as a poker pro (very long)' by Ten7offsuit

[stone_7]

I never meant to say that you could have a reliable winrate after 10K hands. However if you are not winning after 10k hands you are almost certainly not a winning player. I would think that it would be fair to say that if you can not acheive a winrate of 2bb/100 hands at .5/1 with a minnimum of 10k hands then you are clearly not a winning player. Obviously you can't PROVE that you are a winning player but you will have some confidence and experience and judgement about your readiness to move to the next level.