"People have a nasty habit of clustering in coalitions,
professing certain beliefs as badges of their commitment to the coalition
and treating rival coalitions as intellectually unfit and morally depraved.
Debates between members of the coalitions can make things even worse,
because when the other side fails to capitulate to one's devastating arguments,
it only proves they are immune to reason...
New ideas, nuanced ideas, hybrid ideas - and sometimes dangerous ideas -
often have trouble getting a hearing against these groupbonding convictions"
(what is your dangerous idea?, edge.org)