Why is sleep considered to be a characteristic of intelligence in the Bhag 3.26.30?
samsayo ‘tha viparyaso niscayah smrtir eva ca
svapa ity ucyate buddher laksanam vrttitah prthak
Doubt, misapprehension, correct apprehension, memory and sleep, as
determined by their different functions, are said to be the distinct
characteristics of intelligence.