lenticular is a specific scientific term used to categorize certain galaxies
our galaxy is not considered to be lenticular, it doesn't have a dust cloud causing it to look like a lens
our galaxy basically is just in no way a lenticular galaxy.
http://en.wikipedia.org/wiki/Lenticular_galaxy
http://en.wikipedia.org/wiki/Spiral_galaxy
http://en.wikipedia.org/wiki/Milky_Way
To me it just looks like a factual error that Ra and Don both made
our galaxy is not considered to be lenticular, it doesn't have a dust cloud causing it to look like a lens
our galaxy basically is just in no way a lenticular galaxy.
http://en.wikipedia.org/wiki/Lenticular_galaxy
http://en.wikipedia.org/wiki/Spiral_galaxy
http://en.wikipedia.org/wiki/Milky_Way
To me it just looks like a factual error that Ra and Don both made