On 15 Nov 2019, at 17:06, Michael Kay mike(_at_)saxonica(_dot_)com
<xsl-list-service(_at_)lists(_dot_)mulberrytech(_dot_)com> wrote:
(I remember a three-day trial of a mainframe operating system prior to
release. The success criterion was that it achieved a mean time between
failures above 24 hours. In the event there were 3 failures over 72 hours.
They were all caused by the operator loading a particular deck of cards
upside down. After three crashes he realised his mistake, and didn't do it
again. What was the probability of that happening?)
How many of the XSL list have ever handled a deck of (computer/Hollerith)
cards? Some of us are showing our age....
John Lumley
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