Bend 2 and the Vibe-Coding Trap

Bend 2, a language designed for AI-assisted coding where humans write specifications and AI generates implementations with formal proofs, falls into what the author calls the "vibe-coding trap" by failing to recognize existing formal verification methods. The article demonstrates that Bend's demo requires 58 lines to state simple rules and 442 lines for proofs, whereas the same program can be expressed far more concisely in SPARK, an established formal verification language that Bend's developers apparently overlooked despite building their entire approach around the field of formal verification.