• “We’ll just cache it”
  • “We’ll add the retry later”
  • “The timestamp will tell us the order of events”
  • “We’ll parse it with a regex”
  • “We’ll duplicate this field, it’s just one field”
  • “Disk is basically reliable”
  • “We’ll use the filesystem as a database”
  • “We’ll bump the timeout”
  • “Users won’t put weird stuff in that field”
  • “It works on my machine”
  • “We don’t need backups, we have RAID”
  • “That ID will fit in an int”
  • “It’s an internal service, we don’t need auth”
  • “We’ll roll our own (crypto, date math, URL parsing)”
  • “O(n²) is fine, n is small”