Fault-Tolerance

TL;DR for operators A multi-component machine does not necessarily need explicit controller-to-controller communication for useful coordination to emerge. In this study, each of a simulated hexapod’s six legs evolves its controller in a separate population, but every controller participating in a gait receives the same score: how far the complete robot moves. ...

Errors are expensive. That is the boring sentence underneath most quantum computing roadmaps. A physical qubit is noisy, so engineers encode one logical qubit into many physical qubits. If the target computation is large enough, the redundancy becomes enormous. Then the spreadsheet starts doing what spreadsheets do best: quietly turning physics into capital expenditure. ...