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Phil Runciman Permalink
July 29, 2012, 21:37

Dijkstra did not introduce errors systematically and with care. He did, by structuring his solutions using appropriate levels of abstraction, keep them out.

Compare the T.H.E. OS with Brooks' et al IBM BOS. Brooks' team created lots of debugging practice. 40,000 bugs and climbing when I read about it... all those years ago.

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