Apropos of nothing except how little Heinrich understands capitalism, this from David F. Nobles Forces of Production: A Social History of Industrial Automation, Oxford, 1984:
Second N/C {numerical control, the original designation for digitally coded and controlled automatic machine tools} machine tools represented a substantially greater fixed capital investment than conventional machinery. N/C machines were more expensive to buy, more expensive to maintain, and--in many cases--more expensive to operate productively. Thus, cost effective use of the equipment was essential to offset the fixed capital cost, merely to break even. Moreover, because this new technology was evolving so rapidly, existing equipment quickly became obsolete. Thus it was important that it pay for itself as early as possible. Cost-effective use was vital to insure the quickest return on the investment in N/C.Essentially, N/C equipment was cost effective if its use resulted in a reduction of the unit cost of each part produced, such that the savings gained thereby outweighed the investment in the equipment (in the case of GE, this mean the unit cost not only of each part but of the final assembled engine).
Now to anyone who has ever worked in an industry that actually makes capital investments, and big ones, this is not news. This is ABC. That Heinrich can pretend to be a "scholar" of Marx without having the slightest grasp of capitalism is another index to the impoverished condition of Marxism, of class struggle, in the modern world.
Here's my recommendation-- nobody should waste a second reading Heinrich or Harvey or anybody else who cannot and does not demonstrated the historical truth of their assertions in the actual movement of capital.



Can comment on articles and discussions
When I say that temporalism and TSSI, are distinct, what I mean by "temporalism" is the view that the profit rate that is really relevant in the functioning of the capitalist economy (namely in terms of regulating the rate of accumulation) is the historical cost rate of profit (rather than the current-cost rate of profit used by simultaneists).
One can be a "temporalist" in this sense, while disagreeing with the TSS interpretation of Marx, and one can agree with the TSSI of Marx while disagreeing with temporalism (in the sense I defined above).