Question about math in poker

[Scorpius]

Can anyone tell me what the most important mathematical factors are in poker??? The books and articles talk about pot odds, implied odds, odds against making certain hands, etc., but they never say which are the most important factors to calculate and think about. There are all kinds of statistics one could calculate for poker, but you have to draw the line at some point. You simply don't have the time to calculate into infinity while playing your hand. Can anyone tell us what the best mathematician among the top poker professionals would be calculating and whether this would enable the average player to take his game up to a higher level??? This may seem like a silly question to the rest of you, but it is confusing to me in terms of level of importance to one's game and as to what factors to use if it is that important. I just need some clarity on this. Thanks.