Interesting indeed. But what do they do at night? I guess having light is more important during the day to carry out tasks... Might as well forgo this and let their eyes naturally adapt to the darkness lool
Why would they need light during the day they would have natural light.
You do realize this thing is only useful in the day? They place the water bottle there to direct sunlight into their homes during the day.
I see, why are their homes so dark in the day?