Another lesson learnt from this film is that all you need to save the world is a bucket of water, a few masked men and an American lady with a work-station in Islamabad.
Again the national security strategy proposes a new departure, again a lesson learnt from recent conflicts ranging from Rwanda and Bosnia to Iraq, Afghanistan and Somalia: to create a standby international civilian capability so that for fragile and failing states we can act quickly and comprehensively by combining the humanitarian, peacekeeping, stabilisation and reconstruction support they need.
"This is a very tragic case with a lesson to be learnt, " said Mr Howes.
One lesson that Nokia learnt from this painful experience was to be wary of acquisitions.
It points out that one lesson has been learnt from the last Russian submarine disaster, when the "Komsomolets" sank in 1989.
Whatever the outcome, though, at least one lesson has been learnt.
And Mr Osborne will not be the only figure to have learnt that lesson.
Thailand, where Asia's financial crisis began in 1997, has learnt its lesson the hard way.
He learnt the lesson - he wanted a black puppy, so he was given a black puppy.
Today the world economy wobbles and teeters, but most governments vow that they have learnt their lesson.
Most developing nations seem also to have learnt their lesson from the excesses of the 1980s and 1990s.
Exxon Mobil, another American behemoth sniffing around for natural gas in Eastern Europe, learnt this lesson in 2012.
FORBES: Chevron Digs Deeper Into Eastern Europe For Shale Gas
However, the fund learnt that lesson within a month, urging the Koreans to ignore the fund's own fiscal conditions.
Istanbul mayor Kadir Topbas tried to ease the tension, telling a local television station that "we have learnt our lesson".
BBC: Turkey protesters return to Ankara and Istanbul streets
He learnt the lesson that in a battle between the old and any politician there is only ever one winner.
Mr Tellez says the government has learnt its lesson: this time it will legislate and set up regulation before the sale, not after.
California is only one of many states not to have learnt the lesson from Florida: 25 other states still use the old punch-card system.
Have they, and those lending to them, really learnt their lesson?
Chancellor George Osborne says in the Times that the lesson still to be learnt from Baroness Thatcher at this time of economic gloom is optimism.
"Twice already investors have learnt the lesson that if you wait for everything to calm down in Washington you'll miss out on the rally, " Kelly says.
Steve, or whoever he was, obviously hasn't learnt his lesson.
Hence the time I had stopped working, I had taken time to learn about all the critical elements of business as I had learnt my lesson the hard way.
Nor do employees appear to have learnt the lesson.
ECONOMIST: Workers are sleepwalking towards an impoverished old age
One other interesting tidbit from HTC's presentation was the company's statement that it learnt its lesson from the Tattoo, which had a resistive touchscreen, and no longer plans on offering anything but capacitive displays in the future.
But it has learnt an expensive lesson: that cash is no good without reform.
Mr Hubbert says the Germans have learnt an important lesson: that they should not take workers' loyalty for granted.
One lesson the British utilities have learnt is that privatisation cannot mean they are free to conduct their business as they wish.
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