Ki is the energy of the world. Ki is the life force of the people
around you. It is the life force of the plants and animals around
you. It is the random bit of static electricity waiting to shock you
when you touch the car door handle. Those with the proper training
can harness the energy of their environment, and use it to enhance
their own chi, thus enabling greater stamina, strength, speed, or
clarity of thought and focus. Ki is the energy of without.

IE Use the Force the Luke.

K'thardin
"One shall stand, one shall fall."
    -Optimus Prime
And for a really good question:  Why would anyone wish Tenchi on Sasami?