Louis Antonopoulos (thoughtbot) gives an Indiana-Jones-themed tour of Ruby Ractors, walking through core patterns (send/receive/take/yield/select, streaming, conditional, pipeline) and then live-demoing a substitution-cipher breaker powered by quadgram scoring and simulated-annealing. Ractors finally outperform single-thread decryption once each Ractor uses a different starting key and increasingly aggressive cooling strategy, cracking five rotating ciphers in 60 seconds — the hidden messages being quotes from a Matz interview. Also introduces thoughtbot's new gems Top Secret, Top Secret LLM, and Michelle, and discusses learning cryptography while 'vibe coding' with Claude.
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