God, this is worse than guessing when the hormones in a foetus switch over and dope mommy's blood with contraction juice and it all takes way longer, damagingly and painfully than could ever reasonably be explained by intelligent design for baby to finally be squeezed out, take its first breath, and become another beloved human being.
It's random I tell you. Random! And if it's not exactly random, then it is well and truly beyond science to explain the myriad of inputs that lead to any particular output. What little we know tells us that even Jophiel's brain will have made up its mind 6 seconds before he consciously decides to choose each word and chooses to hit the enter key.
Ok, the universe is pretty, and worth knowing, but I wouldn't bet on pinning down anything precisely, accurately and exactly.