As long as consciousness exists, it objectively contains [Reason], which is also a crucial 'limiter'.
Even a primitive individual without any education,
can inevitably, at critical moments of life and death, use reason to "limit" the individual's thoughts and behaviors.
This kind of limitation can effectively avoid death, reduce the risk of injury, and increase the probability of survival.
And what it mainly restricts is
precisely the - [Insanity] that lies within the individual, at the deepest and most fundamental level.
What is insanity?
Many people attribute it to the wanton discharge of primal desires,
such a definition is too narrow.
Although much insanity is expressed through 'release of desire', true insanity far surpasses it.
When an individual's actions or thought activities in the brain are in a state of 'complete disorder',
and cannot be predicted through any process, rules, or rational analysis,
then this is truly meaningful insanity.