Feo Takahari
Auror
Given a setting where magic is a well-kept secret, about what percent of the population would need to be magic-users to create these effects:
Magic-users can't effectively find and communicate each other.
Magic-users can find and communicate with each other, but don't need to use their magic to keep their secret.
Magic-users can only keep their secret through regular and rigorous use of memory-wipe magic.
(I understand this isn't exactly a rigid science, but we should be able to come up with reasonable estimates. I'm going for type 1 in my current project--most people with magical potential go their entire lives without meeting anyone who can train them.)
Magic-users can't effectively find and communicate each other.
Magic-users can find and communicate with each other, but don't need to use their magic to keep their secret.
Magic-users can only keep their secret through regular and rigorous use of memory-wipe magic.
(I understand this isn't exactly a rigid science, but we should be able to come up with reasonable estimates. I'm going for type 1 in my current project--most people with magical potential go their entire lives without meeting anyone who can train them.)