Writing from tahzeer.https://tahzeer.github.io/https://tahzeer.github.io/blog/the-mt940-tag-86-problem/https://tahzeer.github.io/blog/the-mt940-tag-86-problem/how a single undefined field in a 1970s banking format spawned dozens of incompatible national dialects, broke parsers for decades, and forced a global migration to xml.Thu, 04 Jun 2026 00:00:00 GMThttps://tahzeer.github.io/blog/testing-ai-is-a-different-problem/https://tahzeer.github.io/blog/testing-ai-is-a-different-problem/Traditional software has exact answers. AI systems are probabilistic. Our testing methods haven't caught up — here's what a good system might look like.Tue, 28 Apr 2026 00:00:00 GMT