The blessed metal. Holiness as metallurgy.

The bio-voltaic drive is calibrated to one redox couple: the low-potential [4Fe-4S] ferredoxin cluster, whose midpoint sits near −0.44 volts in clostridial-type proteins. Silver sits at +0.80 volts. The potential difference is 1.24 volts — an enormous electrochemical gradient by biological standards. When silver ions enter the conducting medium of blood and tissue they form a galvanic couple with those iron-sulphur clusters. Electrons dump. The fuel cell shorts.

The second mechanism is oligodynamic poisoning: silver binds thiol and iron-sulphur cluster enzymes across the modified cytochrome chain and locks them. Local contact becomes systemic because the drive is distributed through every mitochondrion. This is undergraduate electrochemistry applied with prejudice. Not holiness. A metal sitting in the wrong place on the galvanic series. The inlay sits in the blood-channel, not on the flat. A brother-armourer in 1308 could not say why.