- Explained why actor isolation is a necessary assumption.
- Removed similar but poorly worded explanation from the "Origin" section.
- Discouraged the use of partially embedded objects.
- Listed the properties that are used to specify intended audience.
- Explained why access control on public objects doesn't work.
- Removed requirement to use duck typing (temporarily).
- Added requirement to check authorization on embedded activities.
- Explained why actor isolation is a necessary assumption.
- Removed similar but poorly worded explanation from the "Origin" section.
- Discouraged the use of partially embedded objects.
- Listed the properties that are used to specify intended audience.
- Explained why access control on public objects doesn't work.
- Removed requirement to use duck typing (temporarily).
- Added requirement to check authorization on embedded activities.