Human beings who use language are contextualized,so all knowledge generated by humans is undoubted-ly contextualized.The contextuality of things and actions in context has been valued and studied in philosophy and linguistics,forming a contextualism about world hypothesis,scientific contextualism and epistemic contextualism,etc.,while outside philosophy and linguistics,especially in the fields of computer science and artificial intelli-gence,the role of context has not received due attention and research,which is very detrimental to people's con-struction of artificial general intelligence.In fact,experts in computer science and artificial intelligence have been using context consciously or unconsciously for modeling and reasoning,so it is necessary to clarify the meaning of context in artificial intelligence and cognitive science,multi-agent's modeling and reasoning in context,and the relations between contextuality and compositionality of artificial agents.