The Design and Implementation of laffer1

http://blogs.sega.com/usa/2009/08/14/happy-20th-birthday-sega-genesis/ 

I still remember when I got my Sega.  I was living in Clio.  Got it for Christmas.  It was the first generation with sonic the hedgehog.  I think it had been out 2-3 years by then.  I had rented one from the local video store several times.  I told my mother I wanted a genesis or snes and she went with the cheaper of the two.  Back then, a genesis cost 129.99.  

I just looked up the release date of Sonic the Hedgehog.  it was June 23, 1991.