A man in a blue shirt with glasses and a shaved down head is looking at a microscope in a laboratory .
It is impossible that a man in a blue shirt with glasses ponders whether or not to use a microscope .
It is impossible that a man in a blue shirt with glasses ponders whether or not to use a microscope .
It is almost certain that a man in a blue shirt with glasses ponders whether or not to use a microscope .
A man in a blue shirt with glasses ponders whether or not to use a microscope .