That is: your paper should be at a local optimum;
I was worried that the attachment between the crystal and the package would be super rigid and it would shatter during removal, but that turned out to not be the case. It was a soft, silver-filled adhesive that broke easily after getting a scalpel blade under the far edge of the crystal, allowing me to remove it with no visible damage under low magnification (perhaps some scratches visible at high mag depending on how hard the scalpel I used to pry it was compared to the quartz - hardened steel is around Mohs 7 which is the same as quartz, so depending on the exact alloy and hardening profile it may have been harder or softer).
，这一点在whatsapp中也有详细论述
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Максимальный скачок продемонстрировали компактные грузовики коммерческой линейки «Профи». Цены на эти автомобили выросли в диапазоне от 57 200 до 60 600 рублей (от 1 990 000 до 2 535 000 рублей).
Here's what makes this insidious: the trampoline runs fine. genericClosure's C++ loop processes all 65,000 steps without complaint. The failure happens when you try to use the result. Forcing that final total unwinds the entire thunk chain as recursive C++ forceValue calls, rebuilding exactly the stack depth you thought you'd eliminated. The error is stack overflow (possible infinite recursion), not max-call-depth exceeded: this is the C++ call stack, not the Nix evaluator's depth limit. A simple integer counter where the comparison is the state (n: if n = N then ...) would survive, because the comparison forces the state at every step and call-by-need memoization prevents the chain. The trap springs when your state has components the step function doesn't touch.