Drops are insidious because they look like success. A try/catch that logs and returns, a filter that quietly discards non-matches, an empty result treated as “nothing to do”, each removes a message from existence with no record. Weeks later a partner asks where their order went and there is nothing to investigate.

Art2link gives every failure a destination instead. A message that matches no subscription, exhausts its retries, or is rejected as a poison message is routed to a dead-letter channel, persisted, visible in tracking, and available for replay once the cause is fixed. Loud failure is recoverable; silent failure is not.