How fast is the speed of light? I don't know, did it say in the book? How fast is the speed of light? I don't know, did it say? I'll ask John How could you ask me that? How could I know? How could you ask me that? How could I know? How fast is the speed of light? I don't know, did it say in the book? How fast is the speed of light? I don't know, did it say? I'll ask John I'll ask John I'll ask John I'll ask John