Constant that parametrizes cause and effect methods.
from_json= <bound method Direction.from_json of <enum 'Direction'>>¶
Order the mechanism and purview in time.
If the direction is
CAUSE, then the purview is at \(t-1\) and the mechanism is at time \(t\). If the direction is
EFFECT, then the mechanism is at time \(t\) and the purview is at \(t+1\).