Necromancy.
but what is it that makes a monkey of a man? Why do they identify with various dogmatic ideologies?
I suspect that one major cause is social instinct. Love could have evolved from familiarity=safety into familiar group=safety. So whatever seems most familiar, closest to one's self, primates tend to fall a little (just a little) in love with, and it becomes their ideological identity. Were this the case, ideologies would tend to travel in social niches.
How do you escape moral or ideological (it could be an amoral ideology) instinct? Is it possible to justify your opinion outside the parameters of slightest emotional instinctive filter? Just noticing the pull towards the ideas of one's affinities is a step toward overcoming that pull.
Humor may not be enough. Introspection, meditation, and initiation may not be enough. And the accumulation of wisdom and understanding may also fall short. After all, the data is infinite, so any efforts to be well informed only accumulates enough gnosis to qualify as a drop of water in the oceans toward gaining a thorough intellect.
The work is a reward, and maybe unbiased opinion actually exists. I suspect that opinions exist free of emotional bias, free of instinct toward social niches and such - and that these opinions suffer still from being the product of observing a small % of the relevant facts.