It doesn’t seem like there are any negative externalities to building the Green Wall in the Sahara. There always are factors that should be considered like if the dust from the winds blowing the sand across the Atlantic is going to be reduced and how that affects other ocean systems due to nutrients or cross pollination to the Americas.
I wonder if dreams are there to tell us what to do that day? Like if our emotions we feel guides us to follow the format of the dream. Maybe even if we don’t dream its because we stay the same we are or someone’s else’s dreams would take over for theme of that day.