Definition of "observationally" []

• In an observational way. (adverb)

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• "We don't know that observationally, but it may well turn out to be the case, and if it does, it won't be surprising."
• "I also don't understand how discussions about multi-factor productivity could possibly distinguish between a supply-side or a demand-side explanation for a recession; surely national income identities mean that the two are observationally equivalent?"
• "At this point, should anyone have a compelling and observationally-supported argument "hey guys, we blew it, this isn't man made at all" they'd make their career on it."