Cause of misjudgment № 20
Drug-Misinfluence Tendency
Chemical dependency warps judgment and self-perception, and almost always leads to moral and cognitive decline.
Munger treated substance dependency briefly but bluntly, because he thought the facts were not in dispute. Drugs and alcohol distort cognition directly and, worse, they bend the user’s perception of their own situation, so that decline is accompanied by denial of the decline. The chemistry does not just impair judgment in the moment; it reshapes the person’s values and self-assessment in a consistently downward direction.
What he stressed is the partnership between this tendency and Simple, Pain-Avoiding Psychological Denial. The addict does not see the addiction, because admitting it would be unbearable, and the substance itself supplies the comforting haze that makes denial easier. The result is a person who is genuinely deteriorating while sincerely believing things are fine — a combination that makes the problem extraordinarily hard to interrupt from the outside.
Munger’s counsel was correspondingly stark and personal: stay away from any conduct that is likely to be addicting, and treat the risk with respect rather than bravado. He had watched substance abuse destroy talented people he knew, and his rule was simply not to start down a road whose end is so reliably bad. It is one of the few tendencies for which his advice is pure avoidance, with no clever harnessing of the upside, because there isn’t one.
