I don't know, it's a theory I've had since high school in the '60s. There is so much we don't know or I should say that I don't know. Such as:
the power of attraction - changing reality with your mind-
"What the bleep to I know"
the pineal gland
esoteric knowledge of all kinds
how about our origins.. we don't even know that
Even if the headline is true, our choice is to push the envelope in the right direction. If you try to be kinder for instance, you're going to affect future generations.
There is indeed a lot we yet do not get our heads around. I believe there is always cause and effect. Like in your example, if you decide to be kinder, you will show future generations how that works. If you decide to be tough on them, they most likely be tough to their children (if they do not decide for another option). Always learning.. :)