[SystemSafety] Difference between software reliability and astrology

[Derek M Jones]

Peter,

> So I looked at what was known about cosmic rays and cosmic ray intensities and makeup at various altitudes, and talked 
> to my physicist colleagues.

Section 6.5 of http://knosof.co.uk/ESEUR/ discusses various
aspects of the impact of radiation. Figure 6.39 shows the
impact of being on top of a mountain vs being underneath
one (in a tunnel).

> without giving either the altitude, or the latitude, or the source of evidence,or the environment in which the subject 
> stands, is highly misleading. For all of those parameters will affect any estimate considerably.
> 
> Furthermore, the URL doesn't load from where I am.

Fixed the dead link.  The linked to paper is available here
https://web.archive.org/web/20150404041546/http://www.tezzaron.com/media/soft_errors_1_1_secure.pdf

-- 
Derek M. Jones           Evidence-based software engineering
blog:https://shape-of-code.com