One thing to note about "experts". They may know their field
In a number of fields even this is dubious. In some fields the only apparent qualification for being an "expert" is to claim to be one to a reporter and then tell the reporter what he wants to hear.
Some people aren't an expert at anything but being a media personality.
Then there are some fields where "expertise" is measured by group applause, without any demonstration by anyone, anywhere that any of them can actually do anything concrete.
For every controversial subject I've heard of, there are always numerous very smart experts on either side. So I'm curious how it is that rational non-experts come to believe one side or the other.
So, what are your meta-arguments for going with one side or the other for any given controversial subject on which you have an opinion?