I really resent Blow's talk, because while his points are mostly valid, the "facts" he presents to support his claims are poorly selected; some of them are outr

I really resent Blow's talk, because while his points are mostly valid, the "facts" he presents to support his claims are poorly selected; some of them are outright lies. Five nines refers to overall system availability and it's not a lost metric, it still exists within the same sphere it's always existed: banking mainframes, data centers, hospital systems, emergency dispatch switchboards etc. It's never been used to market personal computers or software for them.