On Sat, 15 Sep 2012, Steve Langasek wrote:
* You acknowledge that this software is not designed, licensed or * intended for use in the design, construction, operation or * maintenance of any nuclear facility.This is a standard "No warranty" clause wrt nuclear facilities in the US. It is not a restriction placed on the use of the software in nuclear facilities by the copyright holder, it is a CYA statement that the software has not been approved *by the government regulatory agencies* for use in nuclear facilities in the US.
Stuff like this has puzzled me. I would think that "in order to use this software, you must do something which would have the effect of disadvantaging yourself in a lawsuit" wouldn't be considered free. A statement "you must acknowledge X" means that any user who wants to claim not-X in court is forced to drop that claim in order to use the software. If this is a statement that the software hasn't been approved, shouldn't it say "you acknowledge that we *claim* X" (thus not depriving the user of the opportunity to challenge X in court), and not "you acknowledge X"?