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Message: <blockquote data-quote="Coredump" data-source="post: 1286145" data-attributes="member: 6939">Aarrrgggghhhh!!!!!Sorry, this is kind of a valid idea, but it just doesn't really make sense, and it surfaces every few months...The point of using the D20 die, is to *simulate probability*.  Whether this probability is simulated using a bell curve, poissan curve, linear 'curve', etc. MAKES NO DIFFERENCE.  In reality all your proposal does is *change the percentage*For instance, it is determined (by the game designers) that fighter A has a 25% chance of hitting monster X.  This is reflected by the BAB of the fighter, and the AC of the monster. Therefore it takes a roll of 16 on a D20 to hit. What you are doing is decideing that there is really only a 21% chance of hitting (NOTE: most of these percentages are estimates, don't feel like doing a real one for the 2D10 at this point) so you change it to a 16 on 2D10, which is the same as a 21% chance of success.  You could have just as easily changed the AC by one, and gotten the same basic result.What you are doing, however, is greatly changing the effect of magic in certain situations.  If Fighter A needs a 10 to hit a creature, getting a +1 will give a big increase; the change from an 18 to a 19 isn't a very big increase (total hits, yes it is a big percentage increase)  Currently, a +1 always lets you hit on 5% more swings. your change will mean a +1 will hit sometimes 9% more often, and sometimes 1% more often.The point is (and sometimes difficult to see) is that a D20 does NOT give linear results, it gives *binary* results, success or failure, the chances of one or the other is determined by the roll. Changing to 2D10 does not change this..</blockquote>

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