on the distribution of miracles.

I (tentatively) accept the following two principles: 

[A] (x)(y)(z)(Dx ^ Dy ^ Dz) → ◇(Mgx v Mgy v Mgz))

read: for any x, y, and z, if x, y, and z suffer from a disorder (D), then it’s possible that either x, y, or z is miraculously healed by (M) God (g).

and

[B] (x)(y)(z)((Dx ^ Dy ^ Dz) → ~◇(Mgx ^ Mgy ^ Mgz)))

read: for any x, y, and z, if x, y, and z suffer from a disorder (D), then it’s not possible that x, y, and z are miraculously healed by (M) God (g).

Comment: Though it’s possible for God to miraculously heal any particular person, it’s not possible for God to miraculously heal each and every person, for miracles by their very  nature must be infrequent.