Originally Posted by
joinedintime 
Think of when you have a headache (not a killer hangover headache but a "regular" one) at some point it's bad enough to take something for it then typically you can't point to which minute where it went away...you just realize at some point "hey, my head feels better"
That is a superb analogy. This really helps me to understand how this process can evolve over time. Thanks for posting it!