I was originally going to make and upload this back when I uploaded the first video of messing around in this DOS-era 3D Studio, but didn't get around to it.

You can see a few annoying limitations the software had here-and-there.  Nothing major, but they don't make any sense.  And weren't there algorithms back then that allowed for raytraced soft shadows?  No matter how large the falloff of a given light, raytraced shadows always appeared razor-sharp as if the sun hit the objects.