Circle
You can join anything in Circle. It can be a group of people by interests, a company or department in a company, some professional sphere (doctor, programmer, driver), it can be a group of your devices, validation nodes of the blockchain, or even countries.
When we create a Circle there are sets of internal and external rules which defines a Circle.
Internal rules define the distribution of Impact and Pressure inside a Circle.
External rules define interactions with other Circles. It could be pressure rules, minimum trust/imprint access levels, events, and callbacks, etc.