I am extremely excited by this discovery. Not from a moralistic point of view, but from sheer logic I can see that self interest doesn't work; can't work. If I bargain so hard with the vegetable vendor and beat him down daily it is only a question of time before he shuts down. The next one will do the same if I am the same. Ultimately I'll have to go to a shop a little further away. So I lose since. And if that shop stays around for a long time you can be sure I am not winning the bargain battles all the time! This is true even when it comes to company. If I am such a pain that I won't listen to anyone because I am so full of myself it is just a matter of time before people hang out the 'engaged' sign the moment they see me. I learned this one the hard way!
There is a certain elegance with which you can prove that self interest works against one's self interest using elementary Maths; the maxima and minima we learnt in school. Whenever you try to maximise something, maxima and minima has taught us, you must do so within some constraints. Which is why you have a 'y' on the left side of the equation ( the 'dependent' variable you're trying to maximise) and several 'independent variables' such as x1,x2, and x3 , on the right side of the equation. You always maximize 'y' subject to the constraints imposed by x1,x2,x3 on y. You try to get as much of the wafers, subject to there being enough for others. When you do such a maximising of your benefits subject to others also maximising their benefits, you may not get as much as you could have got without any constraints. But everyone is happy. Why is that important? In the wafer example, I maximised without any consideration for others, so I won didn't I? Well, yes on that occasion. But chances are that I won't be called again for a party. Or worse still, the host may decide to serve me rather than leave the wafer bowl on the table! Such humiliation. So maximising your happiness given that others need to also maximise their happiness is the only logical way for you to be happy consistently in the long term. QED.
What makes this discovery very exciting for a theoretician like me is that economics fails to recognise this elementary truth. It only recognises greed or self interest. It fails to see that self interest is best served by 'enlightened' self interest. So it is that companies try to maximise share holders' wealth without any consideration for the other stake holders like employees and customers. You want to show profits this quarter, fire a 1000 employees, goes economic logic. If you want to make big profits, burden unsuspecting individuals with huge loans that they can never repay. When this usurious attitude of the small time money lender became the favoured home loan business strategy of big banks, we got into big trouble. Sacked employees don't spend. So consumption has plummeted. Burdened home loan takers don't pay. So there's a credit crisis. If only economic theory accepted the elementary principle that you can maximise only subject to others maximising their benefits, you wouldn't have this melt down. So the only way forward from this mess, to put it in fancy management jargon, is 'smart greed'. Share holders will have to learn that it is in their best interest not to hire and fire people at will. That a loss in a couple of quarters is much smarter than a melt down. That a few cannot indulge themselves with extraordinary perks and bonuses for firing people. In fact companies must give CEO's bonuses for not firing people in a quarter and still earning profits. Salesmen and loan officers should have their bonuses reduced when customers default on payment. That is 'smart greed'. The present day management mantra that a CEO's job is to maximise share holders' wealth belongs in the dustbin. 'Smart greed' demands that you must maximise share holders' wealth subject to employee contentment and consumer delight. Maybe we should add 'environmental harmony' to those constraints. Isn't that self interest too!