fuindordm
Hero
AD&D is a statistically interesting case.
The odds of rolling 15 or better on 3d6 are about 10% (19/216). In Gary's world we can infer that to get tangible bonuses from ability scores your PC should be in the 90th percentile.
A few months ago I asked myself: how many NPCs in Hommelet have at least one exceptional score?
A little futzing with combinatorics on 3d6 and the binomial formula gives the answer: about 40% have at least one 15. And about 10% of NPCs will have 2. So feel free to give that guard captain a 16 strength or the mayor a 15 charisma. You're not inconsistent with verisimilitude.
So requiring viable PCs to have 2 exceptional scores is not that high a bar. Of course, NPCs are just as likely to have penalizing low scores as high ones. The 4d6 method gives you a much higher chance of getting those two 15+ scores, while vastly mitigating the risk of a very low score.
And in my current campaign I also used the "fairness doctrine" that a player can make their PC using any other player's array.
The odds of rolling 15 or better on 3d6 are about 10% (19/216). In Gary's world we can infer that to get tangible bonuses from ability scores your PC should be in the 90th percentile.
A few months ago I asked myself: how many NPCs in Hommelet have at least one exceptional score?
A little futzing with combinatorics on 3d6 and the binomial formula gives the answer: about 40% have at least one 15. And about 10% of NPCs will have 2. So feel free to give that guard captain a 16 strength or the mayor a 15 charisma. You're not inconsistent with verisimilitude.
So requiring viable PCs to have 2 exceptional scores is not that high a bar. Of course, NPCs are just as likely to have penalizing low scores as high ones. The 4d6 method gives you a much higher chance of getting those two 15+ scores, while vastly mitigating the risk of a very low score.
And in my current campaign I also used the "fairness doctrine" that a player can make their PC using any other player's array.