Sunday, February 07, 2010
Friday, January 01, 2010
Thursday, December 24, 2009
Very tasty. Not that I was in doubt, what with the 2.5 sticks of butter, 1/2 cup of cream and the aforementioned rum. It's supposed to have a caramel drizzle but I think that is a little much. A simple dusting of powdered sugar will be much better.
Moving on now to biscotti & chocolate truffles.
Sunday, December 20, 2009
Tuesday, September 15, 2009
Saturday, August 15, 2009
The severe economic downturn has forced many people to reassess their values and the ways they act on them in their daily lives. For some, the pursuit of happiness, sanity, or even survival, has been transformed. Happy Days is a discussion about the search for contentment in its many forms — economic, emotional, physical, spiritual — and the stories of those striving to come to terms with the lives they lead.
Saturday, July 18, 2009
The Universe and the Bucket: Is Space a Human Abstraction or a Physical Entity?
The Frozen River: Does Time Flow?
Teleporters and Time Machines: Traveling Through Space and Time.
In this last one, Greene explores the concept of free will. If one accepts the tenets of classical physics then free will is an illusion. Bear with me while I try to explain.
In the beginning we had the Big Bang. All of the particles that make up the universe exploded outward in a specific way, their movement governed by the laws of physics. Therefore, if you knew the exact state of all of the particles in the universe at any given moment you could predict exactly where they would be at any other given moment. Therefore, you could predict the future. Everything that is happening is happening because it must. To quote Greene:
However, we do not live in a classical universe. Quantum theory changes things. It may be that even in a quantum universe particles behave in a predictable way, that if you could observe the quantum wavefunction for a particular particle you could use quantum mechanics (in this case an equation written by Schroedinger) to determine the wavefunction at any other given moment. But there is the problem of observation. Does the act of observing change the object being observed? Are we missing something, some part of the quantum reality? If that is so, it is quite possible that free will might play a part in physical laws.
Have I thoroughly confused you? Not to worry, as Greene points out, physicists exist in a state of confusion. And that is okay. We do not need to know everything but we do need to explore and to theorize and to dream of what is possible.