Rule 5

Rule 5: We play the game Rules As Written (RAW). The DM makes the rules.
Ok, this one is an obvious one. I don't bring it up to lord my DM-ly might over you guys, but it should be stated that I am human and I have not memorized the entire rulebook, nor do I plan to memorize it. I may mistakenly let something happen or not happen during one game session, only to let the opposite happen on the next game session. You guys are always welcome to challenge my ruling. I don't always have the time or energy to look up every ruling, but if you want to verify that you did indeed miss the roll for a Strength check, or you should have had some bonus for something, then feel free to look it up and point it out to me. Please note that any action older than 1 round is no longer changeable.

Rule 5.1: The DM does not know all the rules.
This is kind of related to why I get things wrong. I don't know all the rules. If you want to do something, then you can either accept my ruling on what it is (which may be wrong) or look it up yourself to know exactly what it is. I forgot what the damage was for an Alchemist Fire. I don't remember the different between a Bullrush Combat Maneuver and an Overrun Combat Maneuver. I don't answering and sometimes guessing, but if I ask you to look it up, please be prepared to look it up. Also be prepared to do something else for your action as looking something up will likely take you more than 2 minutes.

Rule 5.1.1: Seriously ... the DM does not know all the rules.
This is more directly applied to your class abilities. There have been a number of things I've told you guys about specific features of your class that is incorrect. I know a lot about the general abilities for each of your classes. I do not know it all. Please make sure you also read through your class abilities and know what they do.