News on the Bombay attacks is breaking fast on Twitter with hundreds of people using the site to update others with first-hand accounts of the carnage.

The website has a stream of comments on the attacks which is being updated by the second, often by eye-witnesses and people in the city. Although the chatter cannot be verified immediately and often reflects the chaos on the streets, it is becoming the fastest source of information for those seeking unfiltered news from the scene.

But we simply have to be smarter than this:

In the past hour, people using Twitter reported that bombings and attacks were continuing, but none of these could be confirmed. Others gave details on different locations in which hostages were being held.

And this morning, Twitter users said that Indian authorities was asking users to stop updating the site for security reasons.

One person wrote: "Police reckon tweeters giving away strategic info to terrorists via Twitter".

Another link:

I can't stress enough: people can and will use these devices and apps in a terrorist attack, so it is imperative that officials start telling us what kind of information would be relevant from Twitter, Flickr, etc. (and, BTW, what shouldn't be spread: one Twitter user in Mumbai tweeted me that people were sending the exact location of people still in the hotels, and could tip off the terrorists) and that they begin to monitor these networks in disasters, terrorist attacks, etc.

This fear is exactly backwards. During a terrorist attack -- during any crisis situation, actually -- the one thing people can do is exchange information. It helps people, calms people, and actually reduces the thing the terrorists are trying to achieve: terror. Yes, there are specific movie-plot scenarios where certain public pronouncements might help the terrorists, but those are rare. I would much rather err on the side of more information, more openness, and more communication.

• Low-tech is very effective. Movie-plot threats -- terrorists with crop dusters, terrorists with biological agents, terrorists targeting our water supplies -- might be what people worry about, but a bunch of trained (we don't really know yet what sort of training they had, but it's clear that they had some) men with guns and grenades is all they needed.

• At the same time, the attacks were surprisingly ineffective. I can't find exact numbers, but it seems there were about 18 terrorists. The latest toll is 195 dead, 235 wounded. That's 11 dead, 13 wounded, per terrorist. As horrible as the reality is, that's much less than you might have thought if you imagined the movie in your head. Reality is different from the movies.

• Even so, terrorism is rare. If a bunch of men with guns and grenades is all they really need, then why isn't this sort of terrorism more common? Why not in the U.S., where it's easy to get hold of weapons? It's because terrorism is very, very rare.

• Specific countermeasures don't help against these attacks. None of the high-priced countermeasures that defend against specific tactics and specific targets made, or would have made, any difference: photo ID checks, confiscating liquids at airports, fingerprinting foreigners at the border, bag screening on public transportation, anything. Evenmetal detectors and threat warnings didn't do any good:

  "If I look at what we had, which all of us complained about, it could not have stopped what took place," he told CNN. "It's ironic that we did have such a warning, and we did have some measures."

  He said people were told to park away from the entrance and had to go through a metal detector. But he said the attackers came through a back entrance.

  "They knew what they were doing, and they did not go through the front. All of our arrangements are in the front," he said.

If there's any lesson in these attacks, it's not to focus too much on the specifics of the attacks. Of course, that's not the way we're programmed to think. We respond to stories and not analysis. I don't mean to be sympathetic; this tendency is human and these deaths are really tragic. But eighteen armed people intent on killing lots of innocents will be able to do just that, and last-line-of-defense countermeasures won't be able to stop them. Intelligence, investigation, and emergency response. We have to find and stop the terrorists before they attack, and deal with the aftermath of the attacks we don't stop. There really is no other way, and I hope that we don't let the tragedy lead us into unwise decisions about how to deal with terrorism.

An internal memo obtained by The Associated Press says the FBI has received a "plausible but unsubstantiated" report that al-Qaida terrorists in late September may have discussed attacking the subway system.

[...]

The internal bulletin says al-Qaida terrorists "in late September may have discussed targeting transit systems in and around New York City. These discussions reportedly involved the use of suicide bombers or explosives placed on subway/passenger rail systems," according to the document.

"We have no specific details to confirm that this plot has developed beyond aspirational planning, but we are issuing this warning out of concern that such an attack could possibly be conducted during the forthcoming holiday season," according to the warning dated Tuesday.

[...]

Rep. Peter King, the top Republican on the House Homeland Security Committee, said authorities "have very real specifics as to who it is and where the conversation took place and who conducted it."

"It certainly involves suicide bombing attacks on the mass transit system in and around New York and it's plausible, but there's no evidence yet that it's in the process of being carried out," King said.

Knocke, the DHS spokesman, said the warning was issued "out of an abundance of caution going into this holiday season."

Got that: "plausible but unsubstantiated," "may have discussed attacking the subway system," "specific details to confirm that this plot has developed beyond aspirational planning," "attack could possibly be conducted," "it's plausible, but there's no evidence yet that it's in the process of being carried out."

I have no specific details, but I want to warn everybody today that fiery rain might fall from the sky. Terrorists may have discussed this sort of tactic, and while there is no evidence yet that it's in the process of being carried out, I want to be extra-cautious this holiday season. Ho ho ho.

At the centerof the Smithsonian Institution's National Museum of Natural History's gleaming new Sant Ocean Hall lies a preserved giant female squid -- the arresting, spineless star among the vibrant exhibition's animal specimens. Tentacles menacingly outstretched and seemingly frozen in time, the 24-foot squid embodies humans' fascination with the briny deep. But this squid also symbolizes something else: an ongoing experiment in the chemistry of preservation, without which the Smithsonian's new exhibition would not have been possible.

Also note the terrorism tie-in:

To create the exhibit, the Smithsonian had to work around post-9/11 rules restricting flammable materials, while maximizing the lifelike appearance of the squid for public display. They turned not to formalin or ethanol, but to a new fluorinated chemical called Novec, developed by 3M.

If we give up our preserved giant squids, then surely the terrorists have won.