Given that mental illness is prevalent and that we misdiagnose mental illness at a rate >1%. There is a already high risk in a couple hundred people. Furthermo

Given that mental illness is prevalent and that we misdiagnose mental illness at a rate >1%. There is a already high risk in a couple hundred people. Furthermore, some 500 healthy adults do not form a stable society. Being in a high risk environment will flare tempers, 500 is on the low side of genetic diversity, there are no children, there will be pregnancies...