Monday, May 28, 2012

Parameters vs. Constants (Fine-Tuning)

For the sake of clarification, I think it will be helpful to describe what the difference between parameters and constants are, and why I am going to be using the term 'parameters' from now on.

Check this out for a summary of the fine-tuning argument if you aren't familiar with the argument already:

The fine-tuning argument utilizes constants such as the gravitational constant or the expansion rate of the universe. The argument makes the assumption that these 'constants' can take on a broad range of values. Because of this, it makes more sense to refer to them as 'parameters.' So, from now on I will be using the term 'parameter.'

By the way, fine-tuning argument aside, some of the physical constants of the universe actually do vary depending on energy levels.

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