Karma doesn’t decide who is heavier and who is lighter – gravity does. Are you telling us that gravity is alive because it can measure weights? Different masses are treated differently by gravity; how does it know to do that?
You seem to be digressing. According to your belief system, karma is simply a mindless force (as mindless as gravity, in fact). Therefore the life and future of every human being lies in the hands of a cold, mindless, lifeless force.
Contrast this with Christian belief, in which the life and future of every human being lies in the hands of a living, loving God.
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Your “judge, jury and executioner” is projecting the Abrahamic God (who is all three) onto a non-Abrahamic religion, where those concepts do not fit.
You’re right - “judge, jury and execution” doesn’t fit becasue karma is actually more than those three things. Judges, juries and executioners don’t set the rules of morality - the goverment they work under does that, so it’s more accurate to describe karma as “government, judge, jury and executioner” … not bad going for a lifeless, mindless force!
Karma is non-living, yet can distinguish between good, neutral and evil.
Pray tell … how can karma - which is a mindless force with no intelligence or even life - possibly know what is “good, neutral and evil”?
Only a living being with advanced intelligence could have any conception of what is good, neutral and evil. Non-human animals have intelligence, but they have no conception of morality, yet you believe a non-living force (ie, something much lower than even the lowest animal) is the universal master of morality???
If you insist on something alive, then one of the five components that make up a human being is our own personal accumulated karma ( saṃskāra ). In that sense, the living thing that drives our karma is ourself.
Karma existed before human beings,
n’est ce pas?