precautionary principle

The red Australian dust storm: I stood at the window, looking out in amazement. I had never seen anything like this before in my life. The front gate, a mere hundred metres or so away, was close to invisible. The red, choking dust had forced us all indoors, windows shut fast, the dust slowly obscuring more and more of our view. The fine, red silt nevertheless managed to find its way in under the doors and through the smallest crack, coating the floor near the entrances in red.

I see they're going to fire up the Large Hadron Collider at half power. For those who haven't been following this story, your life is being put at risk.

The Large Hadron Collider (LHC) is a project by The European Organization for Nuclear Research, known as CERN. Back in 1964, a physicist called Peter Higgs found an elegant mathematical theory by which he explained one of the great puzzles of particle physics, why mass exists.

There is some background to this question. The twentieth century produced two great theories of physics: relativity and quantum mechanics. Quantum mechanics explained many curious puzzles in the subatomic realm, for example, why atoms don't collapse. Atoms have a field of electrons orbiting the nucleus; according to classical mechanics, any accelerating charged particle (like an electron orbiting an atom) should radiate energy. This means the electron should spiral into the nucleus and the atom should collapse. Obviously they don't because we are still here, made of functioning atoms! Another example is the radiation from black bodies. Only quantum theory can explain why the spectrum is what it is.

It is no exaggeration to say that the modern world only exists because of quantum mechanics: every piece of electronics that exists only works because of quantum mechanics, and a great deal of it was only discovered because we understood the theory behind it all. It is the most successful scientific theory ever. It has passed every experimental test ever thrown at it. But it doesn't explain gravity.

I'll probably be posting quite a bit about global warming, and you might wonder why I think it's a big issue for a site devoted to peace. Well, peace is easier if we aren't all scrapping with each other to eke out an existence in a starving world. True peace (which includes peace with all our nonhuman friends) requires we don't do things that will harm wildlife or damage Earth's capacity to feed us all. True peace should make everyone happy; and if you've seen Gitie's and my wild bird website (wingedhearts.org, you'll know I don't reserve "everyone" just for people.