The main reason why a severe downturn in oil prices during the early '80s was detrimental to the Soviet economy is because Russia was one of the world's leading exporters of oil in the world--meaning that when prices dropped, so did their GDP.
I. cant properly see the image
sorry
I think it might be Freedom of Speech, not really sure though.
When he saw people falling, it made him think about the forces of nature and it lead him to his studies.
