Тема: понятие взаимодействия в дизайне. Drop-in

Entities interact by transferring any information.

In terms of the degree of interaction, the following cases (levels) can be considered under interactivity:

• linear interaction (1 :), or lack of interactivity when the message being sent is not related to previous messages;
• reactive interaction (1: 1), when a message is associated with only one immediately previous message;
• multiple or conversational interaction (1: m), when a message is associated with many previous messages and with relationships between them.
• Sometimes interactivity in a given series of communication interactions is defined as an expression of the degree to which the third in order (or later) message is associated with the level of interaction of the previous information exchange (messages) with even earlier exchanges (messages).