If you want a reliable system it’s very important. Those concepts very much relate to Isolation and Consistency in ACID. Just take a look at different levels at

If you want a reliable system it’s very important. Those concepts very much relate to Isolation and Consistency in ACID. Just take a look at different levels at https://jepsen.io/consistency https://jepsen.io/consistency There are certainly fields with lower correctness requirements where inconsistent data is not such a big deal though.