Scheduling
UntestedReminders, timers and planned tasks. Disabled by default, not running.
Scheduling is a small space: a job engine, natural-language time parsing and persistence. The Brain has seven capabilities for it, five of which check their result against the database.
How it is meant to fire
A scheduled job can either speak to you directly or hand work to another space, which is the more interesting path — a schedule entry becomes a trigger for real work rather than only a notification.