is an electronic cigarette.

It's something that's, since it was invented a year or two ago,

has given me untold happiness.

(Laughter)

A little bit of it, I think, is the nicotine,

but there's something much bigger than that.

Which is ever since, in the U.K., they banned smoking in public places,

I've never enjoyed a drinks party ever again.

(Laughter)

And the reason, I only worked out just the other day,

which is when you go to a drinks party

and you stand up and you hold a glass of red wine

and you talk endlessly to people,

you don't actually want to spend all the time talking.

It's really, really tiring.

Sometimes you just want to stand there silently, alone with your thoughts.

Sometimes you just want to stand in the corner and stare out of the window.

Now the problem is, when you can't smoke,

if you stand and stare out of the window on your own,

you're an antisocial, friendless idiot.

(Laughter)

If you stand and stare out of the window on your own with a cigarette,

you're a fucking philosopher.

(Laughter)

(Applause)

So the power of reframing things

cannot be overstated.

What we have is exactly the same thing, the same activity,

but one of them makes you feel great

and the other one, with just a small change of posture,

makes you feel terrible.

And I think one of the problems with classical economics

is it's absolutely preoccupied with reality.

And reality isn't a particularly good guide to human happiness.

Why, for example,

are pensioners much happier

than the young unemployed?

Both of them, after all, are in exactly the same stage of life.

You both have too much time on your hands and not much money.

But pensioners are reportedly very, very happy,

whereas the unemployed are extraordinarily unhappy and depressed.

The reason, I think, is that the pensioners believe they've chosen to be pensioners,

whereas the young unemployed

feel it's been thrust upon them.

In England the upper middle classes have actually solved this problem perfectly,

because they've re-branded unemployment.

If you're an upper-middle-class English person,

you call unemployment "a year off."

(Laughter)

And that's because having a son who's unemployed in Manchester

is really quite embarrassing,

but having a son who's unemployed in Thailand

is really viewed as quite an accomplishment.

(Laughter)

But actually the power to re-brand things --

to understand that actually our experiences, costs, things

don't actually much depend on what they really are,

but on how we view them --

I genuinely think can't be overstated.

There's an experiment I think Daniel Pink refers to

where you put two dogs in a box

and the box has an electric floor.

Every now and then an electric shock is applied to the floor,

which pains the dogs.

The only difference is one of the dogs has a small button in its half of the box.

And when it nuzzles the button, the electric shock stops.

The other dog doesn't have the button.

It's exposed to exactly the same level of pain as the dog in the first box,

but it has no control over the circumstances.

Generally the first dog can be relatively content.

The second dog lapses into complete depression.

The circumstances of our lives may actually matter less to our happiness

than the sense of control we feel over our lives.

It's an interesting question.

We ask the question -- the whole debate in the Western world

is about the level of taxation.

But I think there's another debate to be asked,

which is the level of control we have over our tax money.

That what costs us 10 pounds in one context can be a curse.

What costs us 10 pounds in a different context we may actually welcome.

You know, pay 20,000 pounds in tax towards health

and you're merely feeling a mug.

Pay 20,000 pounds to endow a hospital ward

and you're called a philanthropist.

I'm probably in the wrong country to talk about willingness to pay tax.

(Laughter)

So I'll give you one in return. How you frame things really matters.

Do you call it the bailout of Greece

or the bailout of a load of stupid banks which lent to Greece?

Because they are actually the same thing.

What you call them actually affects

how you react to them, viscerally and morally.

I think psychological value is great to be absolutely honest.

One of my great friends, a professor called Nick Chater,

who's the Professor of Decision Sciences in London,

believes that we should spend far less time

looking into humanity's hidden depths

and spend much more time exploring the hidden shallows.

I think that's true actually.

I think impressions have an insane effect

on what we think and what we do.

But what we don't have is a really good model of human psychology.

At least pre-Kahneman perhaps,

we didn't have a really good model of human psychology

to put alongside models of engineering, of neoclassical economics.

So people who believed in psychological solutions didn't have a model.

We didn't have a framework.

This is what Warren Buffett's business partner Charlie Munger calls

"a latticework on which to hang your ideas."

Engineers, economists, classical economists

all had a very, very robust existing latticework

on which practically every idea could be hung.

We merely have a collection of random individual insights

without an overall model.

And what that means is that in looking at solutions,

we've probably given too much priority

to what I call technical engineering solutions, Newtonian solutions,

and not nearly enough to the psychological ones.

You know my example of the Eurostar.

Six million pounds spent to reduce the journey time

between Paris and London by about 40 minutes.

For 0.01 percent of this money you could have put WiFi on the trains,

which wouldn't have reduced the duration of the journey,

but would have improved its enjoyment and its usefullness far more.

For maybe 10 percent of the money,

you could have paid all of the world's top male and female supermodels

to walk up and down the train handing out free Chateau Petrus to all the passengers.

You'd still have five [million] pounds in change,

and people would ask for the trains to be slowed down.

(Laughter)

Why were we not given the chance

to solve that problem psychologically?

I think it's because there's an imbalance, an asymmetry,

in the way we treat creative, emotionally-driven psychological ideas

versus the way we treat rational, numerical, spreadsheet-driven ideas.

If you're a creative person, I think quite rightly,

you have to share all your ideas for approval

with people much more rational than you.

You have to go in and you have to have a cost-benefit analysis,

a feasibility study, an ROI study and so forth.

And I think that's probably right.

But this does not apply the other way around.

People who have an existing framework,

an economic framework, an engineering framework,

feel that actually logic is its own answer.

What they don't say is, "Well the numbers all seem to add up,

but before I present this idea, I'll go and show it to some really crazy people

to see if they can come up with something better."

And so we, artificially I think, prioritize

what I'd call mechanistic ideas over psychological ideas.

An example of a great psychological idea:

The single best improvement in passenger satisfaction on the London Underground per pound spent

came when they didn't add any extra trains nor change the frequency of the trains,

they put dot matrix display board on the platforms.

Because the nature of a wait

is not just dependent on its numerical quality, its duration,

but on the level of uncertainty you experience during that wait.

Waiting seven minutes for a train with a countdown clock

is less frustrating and irritating

than waiting four minutes, knuckle-biting

going, "When's this train going to damn well arrive?"

Here's a beautiful example of a psychological solution deployed in Korea.

Red traffic lights have a countdown delay.

It's proven to reduce the accident rate in experiments.

Why? Because road rage, impatience and general irritation

are massively reduced when you can actually see the time you have to wait.

In China, not really understanding the principle behind this,

they applied the same principle to green traffic lights.

(Laughter)

Which isn't a great idea.

You're 200 yards away, you realize you've got five seconds to go, you floor it.

(Laughter)

The Koreans, very assiduously, did test both.

The accident rate goes down when you apply this to red traffic lights;

it goes up when you apply it to green traffic lights.

This is all I'm asking for really in human decision making,

is the consideration of these three things.

I'm not asking for the complete primacy of one over the other.

I'm merely saying that when you solve problems,

you should look at all three of these equally

and you should seek as far as possible

to find solutions which sit in the sweet spot in the middle.

If you actually look at a great business,

you'll nearly always see all of these three things coming into play.

Really, really successful businesses --

Google is great, great technological success,

but it's also based on a very good psychological insight:

People believe something that only does one thing

is better at that thing than something that does that thing and something else.

It's an innate thing called goal dilution.

Ayelet Fishbach has written a paper about this.

Everybody else at the time of Google, more or less,

was trying to be a portal.

Yes, there's a search function,

but you also have weather, sports scores, bits of news.

Google understood that if you're just a search engine,

people assume you're a very, very good search engine.

All of you know this actually

from when you go in to buy a television.

And in the shabbier end of the row of flat screen TVs

you can see are these rather despised things called combined TV and DVD players.

And we have no knowledge whatsoever of the quality of those things,

but we look at a combined TV and DVD player and we go, "Uck.

It's probably a bit of a crap telly and a bit rubbish as a DVD player."

So we walk out of the shops with one of each.

Google is as much a psychological success as it is a technological one.

I propose that we can use psychology to solve problems

that we didn't even realize were problems at all.

This is my suggestion for getting people to finish their course of antibiotics.

Don't give them 24 white pills.

Give them 18 white pills and six blue ones

and tell them to take the white pills first and then take the blue ones.

It's called chunking.

The likelihood that people will get to the end is much greater

when there is a milestone somewhere in the middle.

One of the great mistakes, I think, of economics

is it fails to understand that what something is,

whether it's retirement, unemployment, cost,

is a function, not only of its amount, but also its meaning.

This is a toll crossing in Britain.

Quite often queues happen at the tolls.

Sometimes you get very, very severe queues.

You could apply the same principle actually, if you like,

to the security lanes in airports.

What would happen if you could actually pay twice as much money to cross the bridge,

but go through a lane that's an express lane?

It's not an unreasonable thing to do. It's an economically efficient thing to do.

Time means more to some people than others.

If you're waiting trying to get to a job interview,

you'd patently pay a couple of pounds more to go through the fast lane.