... and with a working link.. here

I like Mike Russell's ultra reductive statement,
"The purpose of life is to hydrogenate carbon dioxide."

or Schrödinger's tongue in cheek definition,
Matter is alive “when it goes on doing something” longer than we would expect it to."

Even if the USAF get a good deal on the iPads at say 500 bucks a pop, 18,000 are going to set them back $9 million dollars. By the time they make up the costs with the $1.2 million in fuel per year, everyone is already on iPad 4.