[spark3k]

Do you really think that the couple hours it saves by having these maps to hand instead of a terrorist going to the station and making their own map of the public space is going to mean the difference between an attack and no attack? Get real. Let’s just get rid of all maps then hmm? Security risk.

[GaylordTuring]

While I don’t agree with the sentiment that it’s irresponsible to publish these maps, I don’t think you should underestimate how lazy the average person is, including terrorists. It often baffles me how utterly ineffective most terrorists are (which I guess , among other things, comes down to “bad”/lazy planning), only managing to kill maybe a handful of people, if even that.

Most people wouldn’t be very interested in being so nerdy as to map out the London Underground. Why would most terrorists be any different?

[redbar0n]

No, but it could make the difference between a poor attack and a very effective attack. The point being that subways are particularly vulnerable points.

Do you think that all maps and other forms of architectural or engineering schemas should be widely publicised, without individual regard to their potential for exploit?

[IG_Semmelweiss]

You are not wrong, but my understanding is that... this is the very reason some NYC subway maps are not made public.