Because they can never be a part of the solution.
Ask them to say the word, "unionized".
You ask them to pronounce unionize.
No one knows. It's never happened.
A problem. What do you call when 3 terrorists are on the moon? A problem. What do you call when all the terrorists are on the moon? A solution.
Three, one suggests to check if it is plug in, another recommends to reboot the printer, and finally one to check to see if the printer had paper and laugh about how easy the solution was.
So the men can think of a solution in silence.