I had submitted this as a follow-on question on the site, but it seems
to belong here instead.
In this post (
http://www.askphilosophers.org/question/3236), Dr.
Nahmias argues that determinism, properly understood, is compatible
with 'free will' in the morally relevant sense; and in clarifying how
that can be so he indicates that determinism does not entail the
epiphenomenalism of conciousness (I think that is what he means by
'bypassing').
I understand that the relationship of entailment does not obtain. But
I'm worrying at the thought that there is a different close connection
between them -- put roughly: the considerations that could plausibly
lead one to believe in determinism, also imply epiphenomenalism of
consiousness. For example, one might think:
1) All physical events are caused by prior physical events, according
to natural laws.
2) All mental events are related to physical events in law-like ways.
3) There are no events that are neither mental nor physical.
The premises 1) through 3) imply
4) All events follow lawfully from prior events. [determinism]
and they also seem to imply
5) All events follow lawfully from prior physical events.
[epiphenomenalism or eliminative reduction of the mental]
One might deny the premises of this argument in a number of ways, but
more broadly, I don't see how the metaphysical thesis of determinism
can inherit its epistemic warrant from the success of the physical
sciences (as surely it needs to do), without also inheriting at least
the most deeply entrenched metaphysical assumptions of that science
(if not exactly 1 and 2 above, some other statement of the causal
priority of the physical). That atrocious sentence was a concealed
question.
In the above, I've supressed any reference to quantum indeterminacy,
thinking it at best marginally relevant to the physical processes that
underlie consciousness, and no help in establishing the causal
efficacy of phenomenal consciousness anyway. If either is wrong I'd
be glad to be corrected. But in the above, 'determinism' should be
regarded as short for 'determinism of the macroscopic-enough domain
that is relevant to consciousness.'
I'd be very grateful for the insights of the panel on this. Thank
you!
- philosophy fan