a commonsense rule (or set of rules) intended to increase the probability of solving some problem.
"Ye Li is now living with him. Anybody who has commonsense will not believe such a rumour," Yao's spokesman told Titan.
arrive home at a reasonable hour; commonsense scholarship on the foibles of a genius; unlearned and commonsensical countryfolk were capable of solving problems that beset the more sophisticated.