Poul-Henning Kamp made some inquiries about how quickly Rob could review
code. I suggest this question misses a few important items.
1. Documentation. If the documentation for any given system claims UTC
agrees with UT1 or GMT within 0.9 s, there is the danger that some
programmer who only looks at source code, program documentation, and
reports of UTC and UT1 at some point in the 2020s will think the program
is malfunctioning, and attempt to fix it without first getting a more
complete understanding of the situation.
2. Absence of documentation combined with assumptions. Basically the
same problem as 1, except instead of explicit documentation, the
programmer relies on what he remembers from some college course on
surveying, astronomy, etc., or perhaps a navigation course he took years
ago from the U.S. Power Squadron or the like.
Gerry Ashton
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