[Martin Taylor 991117 08:42]
[From Bill Powers (991116.1208 MDT)]
Unless and until Bill or someone chooses to comment on my description of
the interplay of digital and analogue control systems, I have retired once
again from talking about the architecture of the hierarchy. But I thought
that CSGnet might be interested in an experiment that is to start
shortly.I did comment on it, but have received no answer to my last post on the
subject, in which I showed that your proposal involves a problem with
level-skipping in setting reference signals in the middle of the hierarchy.
The higher analog levels would try to counteract the effects. You said that
there were no higher _digital_ levels to cause such a problem, but I
pointed out that it is the higher _analog_ levels we have to worry about.
Last night I went to bed with a half-finished response in the out-going
queue and no access to the mail-server. This morning it seems to have been
delivered, so I won't be surprised if there is adverse comment.
Here's more.
Bill, I re-read your message of 991108.1018, which I presume to be the one
in which you claim to have commented. I can see no comment whatever on
"my description of the interplay of digital and analogue control systems"
[Martin Taylor 991106 12:22].
There are two aspects of that, each of which refutes your restatement
of claim that the so-called "insertion" of a category reference signal
will necessarily disturb higher analogue levels unrecoverably. Neither
have you dealt with the reasons I presented that argue a hierarchy with
this kind of categorical reference value is likely to be more stable
than a purely analogue hierarchy.
Until I get a comment on those points, I will not consider that you have
chosen to comment on my description.
If there's a posting that I have missed because it was under some other
subject heading (I'm not reading the boring thread on coercion, for
example), then perhaps you could send it to me privately with an
appropriate subject line.
Martin