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. 2000 Jun 20;97(13):7372–7375. doi: 10.1073/pnas.97.13.7372

Figure 1.

Figure 1

The logical sequence of a hypotheticodeductive approach. Different natures of the predictions are indicated in parentheses. A hypothetical prediction is subjected to verification usually by observation. An appropriate way of verification is not always available, in which case the prediction remains hypothetical. Verification of the prediction does not necessarily mean verification of the assumptions and the mathematical derivation.