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Message: <blockquote data-quote="justanobody" data-source="post: 4691510" data-attributes="member: 70778">The human brain is a moot point.Math is math.2 + 2 will always equal 4 in a base10 system.2 -(-2) will also always equal 4 in a base10 system.My arguement was the way people look at THAC0. Again se the Player one presented and you get the same math, but a different variable. It just takes the algebra to manipulate the equation to get what you need.A - X = Byou have to solve for X so do it before you do the math.You know you dont have X so solve for X.A - X + X = B + XSince X - X = 0 remove them from the left hand sideA - (-B) = B + X - BSince B - B = 0 remove them from the right hand sideA + B = XNow you just have to plug in the A and B to find your X that you dont know.So rather than using a DM view of the formula, since he knows your THAC0 by asking, and knows the AC...THAC0 - AC = # needed to hit (dice roll + modifiers)The DM can tell you what you need to roll with your modifiers to hit.Use the player view of what you know. Your modifiers, your THAC0, and what the dice gives you and tell the DM what AC you can hit.THAC0 - (Number rolled + modifiers) = AC you can hitSame equation, different looks at it depending on your knowns and the variables you have available to YOU.Just depends on what you are trying to figure out.You don't need a monsters AC to know what you can hit. You don't ever need to know it, but can figure it out. That was my point.Since a list of monsters ACs are not provided in the PHB, you use what you know to determine what you can do. Heaven forbid someone creating something on their own and someone doesn't know its AC by looking it up in a published book! <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f631.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":eek:" title="Eek!    :eek:"  data-smilie="9"data-shortname=":eek:" />So like the rest of the game, take the information you have, and determine what to do with it. Don't trivialize over a chance to hit, just because of the math.You have two doors to pick from. how do you know which one is the right door when you enter a room form a third door. You use what you know, or look for the right clues. You know the correct door isn't the one you entered from.THAC0 gave you all the clues you needed represented in mathematical expressions.So use the information given to figure out what you need to do. Be it with THAC0, BAB, or picking between those two unopened doors.</blockquote>

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