John: consider the following simplified scenario that takes into account
a "better machine."
Let's take the case of an individual capitalist in a competitive market
and let's not consider joint production.
Time Period 1:
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* Capitalist A in branch of production Q purchases new constant fixed
capital which we will call Technology 1. Let's assume that at the time
that Technology 1 is purchased it is the major process technology used in
branch Q.
At the time that Capitalist A purchased Technology 1, she anticipated
that Technology 1 would depreciate over, let's say, 5 years, taking into
account physical depreciation and anticipated moral depreciation.
Time Period 2:
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* Capitalist A can now either purchase Technology 2 or maintain
production with Technology 1.
Which will she do? If the gain in the anticipated production of
relative surplus value and productivity (and profitability including
possible "surplus profits") more than offsets the loss in capital values
already invested in Technology 1, then Capitalist A switches to
Technology 2 and vice versa, ceteris paribus.
In other words, what matters in terms of timing is the relative
efficiency of the new technology (Technology 2) versus the cost of
capital already invested in the "old" constant fixed capital (Technology
1) taking into account normal physical depreciation.
What's wrong with the above as a simplified scenario?
In OPE-L Solidarity,
Jerry