Not sure if my English is good enough for that. Yes you can call it the karmic element, but it is everywhere. "You reap, what you sow" is from the bible ( i think), other religions have similar proverbs (sayings). I do not know about limb connection, but there is people who still feel their arm, after they lost it and it is painful and numb. in neurology they found some evidence as well, that if somebody loses a hand for example, the neurons in the brain, that were responsible for moving this hand change their function and "help" out the other hand. That way some people can learn to use their left hand ( after they lost their right ) in a way they never could have imagined.