The average person: a) rarely changes her or his opinion on a policy issue. b) only changes her or his opinion on a policy issue when a major event happens. c) changes her or his opinion on a policy issue fairly routinely. d) is very indecisive when it comes to views on public policy issues.

Some social theoricals are agreed that most of the people only change their opinions on a policy issue when a major event happens and this event must be related to their personal history of affect them directly or someone they love or care about.

first paragraph (and busy all the night ,with a silence deep and white )

the scientific revolution brought us a renewed understanding of humanity and our place in the universe, new scientific equipment, and new laws as a basis for future scientific discovery.