Premise: Why -- on the last point, it's -- I've counted that as zero. The reason I've counted it as zero is it seems to me that the added value, incentive value to produce between life plus 50, or life plus 70, is zero. It's carried out, as the economists do, to three decimal points, divide by 100 for the probability of your ever having such a work, and you get virtually zero, no difference between this and a perpetual copyright.
Hypothesis: It gets more convoluted than this, it's just that the context was cut down to a few sentences.