Note that this result is biologically meaningful. It tells us how rapidly the pups are growing per day before birth. By contrast, the number 5.66 grams per day has no biological significance, because it conflates two separate processes, one of which is not causal but anticausal (or diagnostic) in the link P ← L.
Thus we see here that this is really Bioinformatics! Or what Bioinformatics should be; derivation of biological quanties based on causal models of the phenomena!
