Originally Posted by ASEI

In fact, self criticism of the groups we are in is probably more valuable from a moral standpoint than criticism of other groups as woo-woos. After all, we can keep our own groups on track, while we have little effect on others' groups (we're heretics to them). A society full of self critical people will manage to beat back superstitions and orthodoxies of all sorts, while a society full of other-critical people will fragment into mutually hostile tribes that don't listen to each other and don't self-examine.