Matt Ridley supplies a dose of good end-of-the-week vibes with this article based on his new book, The Rational Optimist (Harper 2010):

When I set out to write a book about the material progress of the human race, now published at The Rational Optimist, I was only dimly aware of how much better my life is now than it would have been if I had been born 50 years before. I knew that I have novel technologies at my disposal from synthetic fleeces and discount airlines to Facebook and satellite navigation. I knew that I could rely on advances in vaccines, transplants and sleeping pills. I knew that I could experience cleaner air and cleaner water at least in my own country. I knew that for Chinese and Japanese people life had grown much more wealthy. But I did not know the numbers.

Do you know the numbers? In 2005, compared with 1955, the average human being on Planet Earth earned nearly three times as much money (corrected for inflation), ate one-third more calories of food, buried one-third as many of her children and could expect to live one-third longer. All this during a half-century when the world population has more than doubled, so that far from being rationed by population pressure, the goods and services available to the people of the world have expanded. It is, by any standard, an astonishing human achievement.

We invent new technologies that decrease the amount of time that it takes to supply each otherís needs. The great theme of human history is that we increasingly work for each other. We exchange our own specialised and highly efficient fragments of production for everybody elseís. The ëdivision of labourí Adam Smith called it, and it is still spreading. When a self-sufficient peasant moves to town and gets a job, supplying his own needs by buying them from others with the wages from his job, he can raise his standard of living and those he supplies with what he produces. [.  .  .]

So ask yourself this: with so much improvement behind us, why are we to expect only deterioration before us? I am quoting from an essay by Thomas Macaulay written in 1830, when pessimists were already promising doom:

ìThey were wrong then, and I think they are wrong now.î