Am 06.05.2015 um 16:28 schrieb lhecking@users.sourceforge.net:
And I, personally, would want an email from aforesaid manager telling me not to do any upgrades, which I would print out in several copies and put in a secure place....
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You do not understand the situation I presented. This is about avoiding a situation where in a highly complex envirnoment, due to a quirk in one of the dozens of tools involved in designing your product, the product suddenly changes because libc was updated to a newer rev. So you keep your design environment static - all parts of it. We're talking business process here, not some stand-alone, uninformed PHB decision.
I am on your site - but this approach (your word, static) is also a goal of an enterprise operation system. So, your argument is valid but rare in the above example (libc breakage, enterprise context).
-- LF