From: "Tim Rhodes" <proftim@speakeasy.org>
To: <memetics@mmu.ac.uk>
Subject: Re: Class defections etc
Date: Mon, 16 Aug 1999 04:19:46 -0700
Derek,
I don't understand these terms:
>$proportion = $P/($P+$W);
So $proportion is the proportion the population the professional class
comprises, correct?
> $P_old_money = ($P * $Rp); # this is the rate the upper class
>reproduce
You mean, this is the _number of children_ rather than the rate, right?
(The rate is Rp, after all.)
> $W = $W * $Rw; # this is the rate the workers reproduce
> $total = $P_old_money + $W; # this is the total size of the next
>generation
This is not the size of the next generation though, Derek. Where are the
new money kids? Which class did you lump them into and from which
reproductive rate?
> $P_new_money = ($proportion * $total) - $P_old_money; # the
>vacancies in the upper class
Now what exactly is this term? You've taken the class split in the previous
generation ($proportion) and multiplied it by the new generation's total
(according to you) population. Why? All you're doing is applying the old
split to the next generation. Why would you do that and what does that gain
you?
I think where we part ways is that you implicitly assume that the size of
the niche in the professional class is somehow magically set by the last
generation. Why do you make such an assumption? It's that assumption
that's leading you astray.
You're interpretation feeds the previous ratio back into the current
generation rather than creating a new ratio based on the new population and
the rate at which people are moving up and/or down through the class
structure. If you think these equations are correct, I suspect you've
entirely missed my point.
-Tim R.
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