Which, however, still leaves open the question of whether I would want to go with a composition of
1) the y_ from the "Population to ICBM" step and the inverse of the y_ from the "Native to Shoot/Population" step, combined with Pushforward
2) the y_ from the "Native to Shoot/Population" step and the inverse of the y_ from the "Population to ICBM" step, combined with Pullback
Would we then rather go with 1) due to being "Pushforward", or does it matter at all?
Best
Helmut
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