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Logical qubits are an engineering workaround to buy time by avoiding direct measurement. Price tag: more physical qubits + constant syndrome measurements = **more self-noise**. By physics, they **lower** the ceiling, not raise it. Lindblad is fundamental. Shor on a Bitcoin key needs ~2,000 qubits in one global wavefunction for hours. Now strip away **every** engineering problem. Give me the platonic ideal QC: - absolute zero - perfect vacuum - zero cosmic rays - silent measurement - no logical qubits needed Even then, **self-decoherence alone** (Γ ≈ γ N²) caps you at ≤170 physical qubits and coherence collapses in an hour. **SELF-decoherence.** You can’t isolate the system from itself. That’s not an engineering limit. That’s the universe saying “no.” Get it now? I'm not trying to roast you. The engineering is dazzling. But Lindblad's formula is the relationship between quantum stuff and classical stuff. All the skyscrapers of data we have track to that simple formula. And this is why I care and why I learned about this: we can't be mangling Bitcoin or scaring people away from ECC freedom tech over something that can't happen. They are way too important.