Supply-side fiscal policy is used with the idea that rich people stimulate job growth by hiring more people. This has proved to be somewhat inaccurate, however.
Karma is related to reincarnation because who or what you reincarnate to relates to karma. If you did good deeds, lived a good life, then you have good karma and reincarnate to something better then you were in your previous life. If you did bad things then you would have bad karma, and get the bad thing you did done to you in your next life.
