Trading, you can look at candlestick charts.

Buying a house, you can calculate the return.
But when it comes to marriage, what do you use to evaluate?
Human nature won't be written in contracts.
Emotions won't be disclosed in advance.
The future won't provide you with backtesting data either.
You think you're choosing a person, but what you're really binding yourself to is:
The other person's family, values, emotional stability, and decision-making in extreme situations.
If you choose incorrectly, you're not just losing money.
You're losing time, energy, and even your entire life path.
And the most brutal part is:
You might realize you've made a mistake when it's already too late.