Cringely reposts an excerpt from a post of his that appeared two days after 9/11. Right now it seems obvious, but I don’t know if it seemed that way then:

‘To a man with a hammer, everything looks like a nail,’ wrote Mark Twain. In the current context this means that the organizations charged with reacting to this catastrophe will do so by doing what they have always done, only more of it. Congress, which controls the budget and passes laws, will want to pass laws and to allocate more money, lots of money, forgetting completely about any campaign promises. The military, which is the nation’s enforcer, will want to use force, if only they can find a foe. The intelligence community, which gathers information, will want to be even more energetic in that gathering, no matter what the cost to the privacy of the millions of us who aren’t thinking of terrorist acts. And agencies like the Federal Aviation Administration, which regulate, will want to create more stringent regulations. Now here is an important point to be remembered: All these parties will want to do these things WHETHER THEY ARE WARRANTED OR USEFUL OR NOT.