God allowed the devil place a tree of knowledge of good and evil in His perfect utopia — The Garden of Eden. Why? Devil must have argued that if man really has power to choose, he must be capable of exercising that power in presence of temptation. God, always fully rational and “believer in evidence based truth” agreed to allow the devil place his tree of knowledge of good and evil in His utopia.
While the rest is history, God in mean time has proved Himself to be right because with thousands of years of history on our side, we know for a fact knowledge of evil does not increase capacity to choose what is right.
History shows knowledge of evil does nothing to increase capacity to choose what is right. Rather, it increases capacity to choose evil.
If knowing evil makes a person more likely to choose evil, is this evidence of capacity to choose? Just as knowing what is good only and choosing what is good does not provide evidence of capacity to choose.
When Allies were vindictive subsequent to World War I so Germans could suffer for what they put Allies through, Germany chose to impose suffering on everyone else as well, hence World War II. When the allies focused on constructive engagement with Germany and Japan subsequent to World War II, it has resulted in friendship. Good beget good, evil beget evil. Neither proves capacity to choose.
We conclude then that presence of choices between good and evil does not necessarily prove there is capacity to choose.
Given an evil response to what is good does not require any imposition of restraint on oneself, an evil response to what is good does nothing to provide evidence of power to choose.
Only when evil begets good (mercy or grace) in contexts within which a doer of good has capacity or authority to repay evil with appropriate justice, with justice of necessity requiring of an injurious event, do we have evidence of capacity to choose.
The point is:
Just because you are offered a tree of knowledge of good and evil does not mean you have to take the devil up on the offer.
We have power to choose. Let us learn to use our power of choice wisely.