I am very lazy and I didn't take notes when I know that I must have done.
Sometimes I'm in the same table with a player that I already saw, I remember that but I don't remember if he/she was a gambler, a very thight player, nothing!
In this moments I says to myself: why I didn't take those f***** notes!!!
Notes are very important, even more when you don't have a good memory like mine!
