Charles G

Or the other way around?

It seems that materials that conduct one well usually conduct the other well also, but it needn't be that way. Right?

I see these trms used, but they often seem interchangable and I want to know if I'm missing some subtlety. Are there times when one word would be appropriate but not the others?

To make this easier on you, here are (American Heritage) dictionary definitions:

au·ral: Of, relating to, or perceived by the ear.

au·di·to·ry: Of or relating to hearing, the organs of hearing, or the sense of hearing.

a·cous·tic: Of or relating to sound, the sense of hearing, or the science of sound.

son·ic: Of or relating to audible sound.

In context: "aural style sheet", "acoustic control", "visual and auditory information", "sonic energy".

What is the difference between Arrow's Impossibility Theorem (Arrow 1963) and Wilson's Impossibility Theorem (Wilson 1972, also Binmore 1976)?

RB Wilson, "Social choice theory without the Pareto principle", Journal of Economic Theory 5 (1972), pp. 478-486.

Here's a paper mentioning it:

http://ideas.repec.org/a/ebl/ecbull/v4y2003i17p1-8...

Here's a statement of Wilson's Theorem:

There exists one of dictator and inverse-dictator for any SWF [social welfare function] which satisfies unrestricted domain, strict non-imposition and monotonicity.

If you're not familiar with Arrow's Theorem, here's an overview:

http://en.wikipedia.org/wiki/Arrow's_theorem