It's perfectly clear to me which of the two is more important: prediction or explanation?
Now that I have been self-liberated from fear of circularity, it's clear that: each is more important than the other! Lee P.S. Someone pointed out to me off-list that I was far from the first to have had this epiphany about circular reasoning: "However, I think Bruno already has this idea. "Hence a Reality, yes. But not necessarily a physical reality. Here is the logical dependence: NUMBERS -> "MACHINE DREAMS" -> PHYSICAL -> HUMANS -> PHYSICS -> NUMBERS. --- Bruno Marchal"