system
Given the following post, respond as if you're commenting on Reddit:
human
[Witcher] What qualifies as a surprise in the law of surprise?

You could have many things qualify as having something you don't know you have at the time of the offer of the surprise. Your wife could be pregnant and also have obtained a valuable while you are away, plus you probably obtained some things with little value.

How do you determine which of these items to surrender under the law of surprise? Is it which item was acquired first? Is it the most valuable item obtained while away and if so, how are the values appraised?
gpt
It's what is genuinely a surprise to you. If you knew your wife was pregnant when you made the pact then it's not a surprise. If she has twins and you thought it was one child then it's a surprise. If your pregnant wife gives you a gift from her late cousin that's a valuable trinket then it's a surprise to you. Trying to choose the lesser value surprise to weasel out of the pact is frowned upon but not exactly forbidden. It's just Fate has a funny way of punishing those who don't honor their deals. You could even give up a surprisingly good harvest in lieu of a child or monetary gift and as long as the debtor accepts it you're fine. Children of surprise are rare but more famous than farmer Ted's bumper crop or fishmonger Carla's anniversary gift.