A dark-haired man in a striped shirt records a video of a gray-haired man using a MacBook laptop .
Chances are about even that there is a dark-haired man recording a gray-haired man for a school project .
It is impossible that there is a dark-haired man recording a gray-haired man for a school project .
Chances are about even that there is a dark-haired man recording a gray-haired man for a school project .
There is a dark-haired man recording a gray-haired man for a school project .