The 3 things I learned when I had my foundation repaired that shocked me: not all cracks indicate settlement
https://charlieugek973.theburnward.com/the-homeowner-s-3-things-to-know-before-calling-for-crawl-space-encapsulation-and-foundation-repair
The 3 things I learned when I had my foundation repaired that shocked me: not all cracks indicate settlement, some are shrinkage, and pattern matters more than size alone.