Slight digression for moment of nostalgia and copyright notice. 

This (right) is my favorite Firesign theater album.  I heard it for the first time on FM radio in high school while vacuuming the living room floor (yes, young people used to do these chores). 

It led to harder comedy.  

Note to subsequent generations of young people -- FT's comedy remains hilarious and does not age with time.   

From Wikipedia:  this image is of a music album . . . and the copyright for it is most likely owned by either the publisher of the album or the artist(s) which produced the music or artwork in question. It is believed that the use of low-resolution images of album . . . solely to illustrate the album . . .  in question . . . qualifies as fair use under United States copyright law. Any other uses of this image, on Wikipedia or elsewhere, may be copyright infringement. See Wikipedia:Fair use for more information.

OK, I blew the entire post on that.

Part III (3) Three on Step IV (4) Four from the Lax & Sebenius article, The Art of the Best Deal follows.