Although people don't think according to the laws of logic, they might as well measure people's level of thinking with logic. Just as people don't follow grammar to speak, they can use grammar to measure people's language level. Can it be launched from this? ["People's thinking is not logical.", 'Speaking can be done without following grammatical rules.', "A person's level of thinking can be measured by its degree of consistency with logic.", 'Human thinking is aided by language.']