Well, the post volume is high near the deadline. You have a lot of the players in the room at the same time. And there is much more pressure on a decision at this point than there is during the day. So understanding the deadline is important and it is easier to do when you are around for it.
That said, you can certainly play the game without being around for it. I just think it is harder (not impossible) to get good reads when you aren't around at the same time as the majority of players.
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