As the result of human cognition, knowledge is a concept with great extension. It generally includes four levels or aspects, namely, common sense, experience generalization, scientific knowledge and philosophical knowledge. The so-called common sense mainly includes common knowledge such as sayings and proverbs, which is often not an understanding of the nature and laws of things. Scientific knowledge is a theoretical system, which is logical and systematic.
The argument is supported by the sentence "Scientific knowledge contains common sense."