The power to cloud men's minds
Some people are just more susceptible.
There was a SF short story about a nebula that just happens to drift into the Solar System, and the composition of the cloud just happens to dramatically lower human intelligence. As the lights begin to go out, the last few bright sparks try to determine just how big is the cloud, thus how long the dark ages will be. They fail...
Not "The Black Cloud". And not "The Shadow". I just don't know why I can't bring the title to mind... er...
Biting the hand that feeds IT
