Lucas and Luna dig into test flakiness — tests that fail without any code change. They break down why flaky tests destroy developer trust, waste hours of CI pipeline time, and silently undermine entire QA strategies. Lucas cites real data: Microsoft's 2014 study found 14% of test failures are flaky, and a 2023 Google survey showed teams spend 10–30% of sprint time re-running and debugging false failures. The hosts walk through practical root causes: async timing, test ordering dependencies, and brittle environment assumptions. Luna challenges Lucas on whether most teams even track flakiness. They close with a concrete playbook: quarantine flaky tests, measure flaky-failure rate per build, and set a 2% threshold for blocking deploys. A must-listen for any engineering team shipping software in 2026.

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