Observational

Brahe invented many instruments such as the Tyconian Quadrant which were widely copied and led to the invention of improved observational equipment.

Greenhouse gas emissions from human activities are the only factors that can account for the observed warming over the last century; there are no credible alternative human or natural explanations supported by the observational evidence.

I read the article "Exoplanet Biosignatures: Observational Prospects."

The documentary is purely observational and critics say it avoids being didactic, helping to broaden its appeal.

Goldberg cautioned that the Chinese study was observational, relying on information provided by the mothers many years after they had given birth, so the findings do not prove a cause-and-effect relationship. She said what's needed is a head-to-head comparison of women who breast-feed with a control group of those who don't, to see whether there are long-term heart-healthy benefits.

The essential fact is simply that all the pictures which science now draws of nature, and which alone seem capable of according with observational fact, are mathematical pictures.

An alternative way of defending the proposal to conflate NP MOVEMENT with XP MOVEMENT would be to question the observational adequacy of the claim that NP MOVEMENT only ever has NP constituents as its target.

No less than the novelist, the psychologist must employ techniques of literary construction to render scientific accounts acceptable. Most importantly, to the extent that such techniques dominate the scientific account, observational practices—regardless of rigor—cease to be influential.