You're right about the linearity being flawed, but I think there's an important and rescuable construct there. Humans do have ranges of illumination where we ca

You're right about the linearity being flawed, but I think there's an important and rescuable construct there. Humans do have ranges of illumination where we can easily accomplish certain classes of tasks - very few want to tat lace or operate heavy machinery by starlight, for example.