Hmm. I've never really thought of rerolling as its own topic, just a corner of whatever else I'm trying to do by way of the rerolling.
I can say that rerolling is relative to what you're trying to achieve. There's no absolute standard for what constitutes a gamble vs safety or a dud. If you're trying to win Sacred Sites in 100 turns, you need to gamble on a faith ruin for the pantheon and call it a dud if you never get one. But if you'll be satisfied at 150 turns, no need. Science in 170 turns probably needs a strong Great Library gambit, science in 190 turns can skip it.
I don't think I can quantify when to keep playing or to restart, it's all based on intuition and pattern matching. I basically have the ability to mentally age-up my civilization and see 30 turns into the future. But I really can't communicate just how I do that. (And sometimes get important aspects wrong anyway.)
I can say that rerolling is relative to what you're trying to achieve. There's no absolute standard for what constitutes a gamble vs safety or a dud. If you're trying to win Sacred Sites in 100 turns, you need to gamble on a faith ruin for the pantheon and call it a dud if you never get one. But if you'll be satisfied at 150 turns, no need. Science in 170 turns probably needs a strong Great Library gambit, science in 190 turns can skip it.
I don't think I can quantify when to keep playing or to restart, it's all based on intuition and pattern matching. I basically have the ability to mentally age-up my civilization and see 30 turns into the future. But I really can't communicate just how I do that. (And sometimes get important aspects wrong anyway.)