[zaphod]

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im pretty sure as carrotsnake is plays very lag, he gets played back at a lot. if you raise a ton of hands and fold, youre losing more by making it 4bb and opposed to 3bb. the more hand you raise, the lower your equity/the more you get reraised, etc. raising smaller negates that. most people know what they're going to do based on the action alone. if theyre in the BB, a 3x or 4xbb raise will typically have the same effect just as a 3.5x or 4x 3bet would.

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I think it is ok to raise smaller on the button occasionally, especially with a laggy style like carrotsnake has. It depends on what you want to achive with your raise.

Another small factor is that this varying your bet size could confuse your opponent. You raise 4xbb from early position. On the button vs the right opponents you only raise to 3xbb. They may deduce that this has something to do with your handstrength and not with your position.
In a way they are right, your range of hands are obviously much bigger on the button than in early position.

If the thight opponents in the blinds dont adjust their calling range and 3betting range you are stealing their blinds for less risk. A lot of the value from these guys is just stealing their blinds.

If the thight opponents adjust since they fell that you are running over them with theese tiny raises, you might get them to overadjust and get into spots where they feel uncomfortable, in which case you also gain.