Those who doubt the least
are often those who know the least!
I am doubtful of many medical procedures,
which doesn't means I avoid them all-
but, rather, that I am skeptical of their claims
as I know that the case for the things people promote
tends to be grossly overstated.
After all, as salesmen for such procedures
promoters have already "drunk the cool aid"
on the effectiveness of the procedure
and are usually unwilling (or unable)
to consider alternative views!