It ' s a better way to determine where there should be shadows and how dark a scene should be based on the way the light would propagate in real life . It ' s basically poor man ' s raytracing which uses big chunks instead of single points . Even if it ' s not as accurate as raytracing , it ' s still way better than the current lighting solutions . <| sep |> I ' m all for saving money too , but until he gets out in the real world then his distortion of reality will hit him harder the longer he stays with mom and dad . He ' s done an awesome job saving . Now it ' s time to do an awesome job on his own . His parents are also pressuring him and creating a really toxic relationship . They ' ll all get along better not living together and not bringing something as emotionally charged as money into their relationship .