Here is one example. The Christians, operating upon principles based on Torah verses, put an end to such things as human sacrifice and cannibalism.
Harmful changes refers to anything that was done that was detrimental to the goal. The opposite of harmful changes would be helpful or positive changes, which would move you closer to your desired state.
Positive.
Work done by the system is considered as PositiveWork done on the system is considered as Negative
POSITIVE work is done when the direction of displacement and gravitational force is same. This makes an angle of zero degrees. Fd?FScos0 equals +1. The work done is positive.
If work is done on the system then it has a negative sign. If work is done by the system then it has a positive sign.
It eliminates the need to memorize everything, as was done in ancient societies.
The work done on a system is positive when energy is added to the system, and negative when energy is removed from the system.
Positive work is done in a physical system when the force applied to an object is in the same direction as the displacement of the object.
Hillel used to say "don't do unto other what you wouldn't want done to you
Societies and subsections of those societies create novel jargon devices. This is done, not only for intra-communication but, as an identifying trait of those societies. These verbal labels may have positive or negative attributes which may seem arbitrary to someone external to the group. Often ordinary words are corrupted within the group and may mean something entirely different to the definition usually accepted. "Doughnut" is one such word within the sub-society you mention. You doughnut.
work
power