Over the past 3 decades as an electrician (and more as a warehouse
worker), I've seen a lot of lighting schemes. And I've watched in
interest as lighting has evolved from bare incandescent bulbs and HID
lamp to modern LED luminaires.
Back in the day, incandescent
lighting produced a lot of shadows... and heat. It was the nature of the
beast, unfortunately. Not to mention that most of the money spent on
lighting energy was more or less wasted on heat, not light.