Practicallightingvs motivatedlighting

Add a general light that matches the light in the practical...which I'm not sure I fully understand how or why that works.

Personally speaking, after seeing how a good cinematographer uses their practical(s) while avoiding these highlights on the wall or even the lamp clipping in comparation to the rest of the image, I can't but help to aim towards that standard. Thoughts? Tips?

Practicallightingexamples

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Practicals are cool. You get the light and you don't really have to worry about "hiding it." However, there's this also really SUPER COOL (/s) effect that you get from a practical right next to a wall where light bulb just draws the shape of whatever is around it. (Example)