[Nifster]

insanity is not contagious

the type of mental derangement to which you refer is taught

[DanMiller]

the type of mental derangement to which you refer is taught

That's among the ways that it spreads. Ignorance, irrational fantasy-based ideologies and trying to "just get along" with those suffering from them are others.

[Tilted Irish Kilt]

Nifster:" insanity is not contagious
the type of mental derangement to which you refer is taught"

COMMON CORE IS INDOCRINATION !!
It starts in grammar school (SIEU - union run)
continues thru high school (SIEU - union run)
and continues into college (SIEU - union run)
and then we wonder why our kids are Socialist ?

[Tilted Irish Kilt]

Nifster :"insanity is not contagious.
the type of mental derangement to which you refer is taught.

You were eloquent !
I specified sources, and was less eloquent.