Kammic causation of future is asymmetric!
Why is it easy to repeat
doing much bad, while doing good is hard to do even once?
Quickly one ruins one's own future by doing just one single wrong or evil
action,
just like one single drop of ink ruins the clarity of even a large glass of
water...
However:
Slowly one purifies one's past behaviour by accumulation of numerous good deeds,
just like single drops of water slowly or never clarifies even a small glass of
ink...
This asymmetry propels beings downward:
The difficulty of doing even a little good;
The ease of doing even much wrong evil...
Sends most beings into the downfall!

ASYMMETRY-1
Easy & swift is it to do what is detrimental,
Painful both to oneself and for others.
While that, which is advantageous to both
oneself & others, is quite difficult to do.
Dhammapada
Illustration 163
Background Story
163

ASYMMETRY-2
Easy it is to see the faults of others.
Hard it is to see one's own flaws.
We seek after others faults like filtering even pure water,
but we cover up our own flaws like a gambler hide his cards.
Dhammapada
Illustration 252
Background Story
252
More on
Kamma (=Intentional Action) Sanskrit=Karma:
Kamma_is_intention,
Intention_is_Kamma,,
What
is Right Action?,
Kamma_is_improvable
Buddha_on_Kamma,
Kamma_and_Fruit,
Good_Action_dilutes_Evil_Kamma,
Impossible
Good_Action_enhances_other_Good_Kamma,
Evil_Kamma_enhances_other_Evil_Kamma,
Inevitable_Consequences,
Kamma_leading_to_short_&_long_life,
Rebirth_and_Kamma
Kamma_leading_to_Health_&_Sickness,
Kamma_leading_to_Low_or_High_Birth,
Kamma_leading_to_Wealth_or_Poverty,
Kamma_leading_to_Beauty_&_Ugliness
Kamma_leading_to_Power_or_Disrespect,
Kamma_leading_to_Stupidity_or_Intelligence,
Effect_of_Action_(kamma)_is_Delayed,
The_Mirror