It wasn't necessary because we've already had systems whose hardware and/or software reliability reached decades between events of unplanned downtime. https://

It wasn't necessary because we've already had systems whose hardware and/or software reliability reached decades between events of unplanned downtime. https://lobste.rs/s/jea4ms/paranoid_programming_techniques_for https://lobste.rs/s/jea4ms/paranoid_programming_techniques_f... http://www.hpl.hp.com/techreports/tandem/TR-86.2.pdf http://www.hpl.hp.com/techreports/tandem/TR-86.2.pdf http://h71000.www7.hp.com/openvms/whitepapers/high_avail.html http://h71000.www7.hp.com/openvms/whitepapers/high_avail.htm... http://www.enterprisefeatures.com/why-are-iseries-system-i-as400-etc-owners-so-fanatical/ http://www.enterprisefeatures.com/why-are-iseries-system-i-a... Now I'm not including all the anonymous, zero-knowledge stuff since the market won't buy that. All kinds of costs come with it that they don't want. Besides, most consumers and enterprises love products with lots of surveillance built in. ;)