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Message: <blockquote data-quote="TheCosmicKid" data-source="post: 7889927" data-attributes="member: 6683613">This is sort of true, but you have to be careful how you understand it. A 50% probability check on a d20 -- say, a +4 roll against a DC of 15 -- is still a 50% probability check on 3d6. Your odds of rolling an 11 are higher, but your odds of rolling an 11 or above are still the same. What the normal distribution on 3d6 does is make the probability of success/failure "fall away" from 50% faster as your bonus or the DC changes.I'm not attributing any fallacy to you in particular. Maybe you already know this and I'm preaching to the choir -- awesome! But in my experience a lot of people hear "increased likelihood of typical results" and think that it means they're more likely to hit these DC 15s on a +4 because they'll roll more 11s. So I'm just clarifying that the math doesn't work that way.</blockquote>