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 How does Bitcoins network ensure the people running it don't bypass its requirements or enforce its security?

 
 Economic consistency. Predictability. All valuable to bitcoins layer 0 - the people. 
 The real answer is physical power. 
 Right. Meat space. My question is around cyberspace. 
 The Bitcoin protocol is a brute-force physical power digitization protocol. 
 Nodes enforce the rules not miners. Have all the hash rate you want but if the block proposed doesn’t abide by the rules nodes will reject it. The meat space constraints (energy) only affect who gets to update the ledger. No?