The Matrix.
Karma is just a word.
As is love.
Respect
honor.
All just words.
What the word implies to each of us as individuals, can be unique. So the word "karma" can be vague and general, which is why to, "take it with a grain of salt", as they say. :-/
Sure, we could all argue and start religious battles because of our indifferences (not saying that's what we're doing, just that we could), but I believe it's more logical to keep an open mind. "Free your mind". Because what the word "karma" implies to me may differ then all you who are reading these words. But to me, karma is a FACT. It exists 100%. It probably could be mathematically proven, or defiantly presented in terms of values, and how everything naturally balances out... Because there's a force that exists that existed long before us, long before the Earth...And it's not in our control. However, as we are all created "In the image of God" (IMO) that we all have great influence on the "force" around us, or in "our world". But ultimately, it has a very strong current (a trillion million Amps) that has the most influence, and changes "our world" (all existence too) beyond our control. "The world is constantly changing. Those who change with it, survive." So, by moral principal and self-discipline, one can choose to ride on the + (positive) side and thus, "his world" will be saturated in, + energy. And for those who choose the other side, well, their world will be consumed by - (negative) energy...... as the core of "karma" to my beliefs, I add, .... eventually, or sooner.