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Book1.11.5 Code Mismatch in Chapter `Modeling Hollow Glass Sphere`
In the code fragment from Listing 79: [main.cc] Scene with hollow glass sphere (file books/RayTracingInOneWeekend.html, line 3647),
the fuzz argument for material_right should be set to $1.0$ instead of $0.0$, or it will not match the rendered result in Image 18: A hollow glass sphere below.