Devin is always asking questions related to time. Like, "how much longer until..." and then the inevitable follow-up "how long is that...." and "is that a long time?" (and then the cycle repeats repeatedly, and I should be honest. I don't handle it well).
One might say that he's obsessed with time and how much time it takes to do things and how long things will last once he's doing them and if things are lasting a long time or not long at all.
So, his existential question about time he posed offhandedly yesterday should not have surprised us. But, it's depth and ultimate truth rather did.
He asked, "is time the master of the universe?"
John confirmed it did while I pondered the question further (ie, started writing this blog post in my head.)