As a result, we can hardly conceive of how many possibilities there are for what we call objective reality. Our sharp quills of knowledge are so narrow and so concentrated in particular directions that with science there are myriads of totally different real worlds, each one accessible from the next simply by slight alterations — shifts of gaze — of every particular discipline and subspecialty.
Herbert J. Bernstein • “Idols of Modern Science”
The discussion to follow highlights a question of style arising in describing a formal language. In formal contexts, style refers to a loosely specified family of formal systems, typically ones with a set of distinctive features in common. For example, a style of proof system dictates one or more rules of inference acknowledged as conforming to the style in question. When it comes to formal languages, style is a natural choice to characterize the varieties of formal grammars or other kinds of formal systems contemplated for deriving the sentences of the language in view.
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