Definition of Terms

Sometimes when humans cannot do something, we eventually change the definition of the term.  Let me provide an
example.  Can humans fly?  The answer was no for most of history.  During that past period of time, some
humans attempted to attach wings to their arms and jump off of cliffs in an attempt to show that humans can fly.  
The Wright brothers redefined the term "human flight" to mean; "Can humans invent and build a machine that can
fly and be strong enough to carry a human as the pilot?"  Almost everybody changed their definition of "human
flight" to "manned flight."  The distinction is made along the spectrum of objective to subjective reality.

It is important to understand this principle before defending your current definition of anything.  An example of this
is the currently accepted human definition of life and why there are so many problems with it.  

See: The Definition of Life