Interactive memory means that when a group of two or more individuals work and live together for a long time, they will share the stored memory  Individuals do not necessarily need to remember all the information, but only need to remember which information the members of the group are experts in, and when they need this information, they can ask them
In this way, the memories that should be stored in each individual are scattered into the minds of the different members of the group, just as the minds of all members form a larger memory bank
Xia Jiang, a graduate student, could not find the original source of a theory. He remembered that a brother in the same research group had introduced the research in this area before, so he went to the brother for help. The brother told him in which book he could find it.