Tom Reasoner shows up with a few comments, including a very interesting one at the end of the long discussion on physicalism. Some excerpts:

From Wikipedia on the uncertainty principle:

“In quantum physics, the Heisenberg uncertainty principle is a mathematical limit on the accuracy with which it is possible to measure everything there is to know about a physical system. In its simplest form, it applies to the position and momentum of a single particle, and implies that if we continue increasing the accuracy with which one of these is measured, there will come a point at which the other must be measured with less accuracy.”The Heisenberg Uncertainty Principle does *NOT* assert that the universe has some sort of random component. It merely asserts that there are limits to our abilities to measure physical properties.

From Wikipedia on chaos theory:

“Systems that exhibit mathematical chaos are deterministic and thus orderly in some sense; this technical use of the word chaos is at odds with common parlance, which suggests complete disorder. ... As well as being orderly in the sense of being deterministic, chaotic systems usually have well defined statistics. For example, the Lorenz system is chaotic, but has a clearly defined structure. Weather is chaotic, but its statistics—climate—are not.”Chaos Theory is *NOT* non-deterministic. It is a deterministic mathematical paradigm used to predict systems that merely seem inherently non-deterministic.

I'm sure that many scientists *do* interpret the Heisenberg Uncertainty Principle to be a case of sub-atomic randomness/non-determinism. I suppose it does not *prove* that determinism is false, however; one is still free to adopt it as a dogma, even if science is now at best officially agnostic. Is Tom a representative of this curious creed, then, I wonder?

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