talisman comments on Terrorism is not about Terror - Less Wrong

32 Post author: gwern 24 March 2009 05:08PM

You are viewing a comment permalink. View the original post to see all comments and the full post content.

Comments (25)

You are viewing a single comment's thread. Show more comments above.

Comment author: talisman 25 March 2009 03:55:09AM 3 points [-]

Hm. I'm far from an expert, and it could well be that there are ten times as many anonymous attacks, but off the top of my head I think of WTC '93, the Millenium plot, 9/11, London trains, Madrid trains, Israel suicide bombings, Munich massacre, Iraq beheadings, USS Cole, bombings of US embassies.

Not off the top of my head: Golden Mosque bombing, Tamil Tigers numerous bombings, IRA-related terrorism, etc. Scanning through this I find many more terrorist attacks that were done with a clear political or propaganda purpose.

Comment author: gwern 25 March 2009 04:57:03PM *  2 points [-]

...it could well be that there are ten times as many anonymous attacks...

No, it's not quite that bad! It's more like twice as many:

"Since the emergence of modern terrorism in 1968, 64% of worldwide terrorist attacks have been carried out by unknown perpetrators. Anonymous terrorism has been rising, with 3 out of 4 attacks going unclaimed since September 11, 2001. Anonymous terrorism is particularly prevalent in Iraq, where the US military has struggled to determine whether the violence was perpetrated by Shiite or Sunni groups with vastly different political platforms."

Abrahms references his analysis of a RAND dataset, and also Bruce Hoffman's "Why Terrorists Don't Claim Credit" (in Terrorism and Political Violence, Vol 9 #1 1997). I haven't read the latter, but his analysis seems enough for me.

I think there's definitely something of a mental bias here - it's vastly easier to remember the rare dramatic attack (which sooner or later someone will claim credit for) than the many anonymous ones.

Comment author: thomblake 02 April 2009 03:51:11PM 1 point [-]

A good heuristic I use when I'm tempted to write comments such as these: "The plural of anecdote is not data!"

Note also that attacks for a reason may well be more memorable than anonymous attacks.

Comment author: gwern 02 April 2009 07:39:01PM 0 points [-]

Funny thing about your comment is that just yesterday I was reading about a large anonymous terrorist attacks that authorities were trying to figure out who was responsible for.

I'd tell you more, but I've forgotten how many people died and where it was.