&quot;How would you sabotage a system?&quot;<p>Just to provide another example, &quot;write a stub prototype of the new system, discover $CRAPPY_ORM in my new hotness language doesn&#x27;t like a couple of the database constructs, migrate production database to work better with the prototype, new system fails to generate some data the old system needed (history, audit logs, tons of options here)&quot;. Back migration now effectively impossible.