A dark-haired man in a striped shirt records a video of a gray-haired man using a MacBook laptop .
There is a better than even chance that the dark-haired man does not know the man who is using a laptop .
There is a better than even chance that the dark-haired man does not know the man who is using a laptop .
It is improbable that the dark-haired man does not know the man who is using a laptop .
The dark-haired man does not know the man who is using a laptop .