[kaveh808]

I developed my first 3D graphics system on a Symbolics back in the mid-80's, before Symbolics released their S-Geometry package.

Though the software was powerful and made use of the extensibility provided by Lisp, it failed to gain much traction in the industry because the hardware was not suited to 3D graphics. Silicon Graphics (SGI) workstations took that market by the early 90's.