Talk:Interaction Manipulation/@comment-4867780-20130526103102/@comment-26241075-20130526122652

Causality is one-way effect, while interaction is two-way effect, and interaction is not just "connection", "separation", "free from", "indepent from",... which mean anything about act-react between two or more objects is a part of interaction.

About change, did you ever see anything that change by its own, without being affected by at least one outside force?