[dsacco]

By "debunked", the parent meant, "there is little clinical evidence for existence."

The burden of proof for the diagnosis is on the assertion; people can act as though they have multiple personalities, and that's why there is controversy on the disease itself.

[azrazalea]

I mean, at least in a social (not clinical) setting, i'd say the burden of proof is on society to prove that it doesn't exist.

I understand not wanting to clinically treat it if there isn't much evidence.

[coldtea]

Not really. You don't prove non-existence -- you prove existence.

Else we'd also have some burden to prove that fairies don't exist.