Analysis of information sources in references of the Wikipedia article "TLA+" in English language version.
Having to describe a design precisely often reveals problems - subtle interactions and "corner cases" that are easily overlooked.
We seldom want to write a specification that isn't machine closed. If we do write one, it's usually by mistake.
Indeed, [most engineers] can get along quite well with specifications of the form (8.38) that express only safety properties and don't hide any variables.
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