 Indeed, scientific theories affirming the existence of gravitational attractions and of electromagnetic fields were thus rendered comparable to beliefs about transcendent entities such as an omnipotent, omniscient, and omni-benevolent God, for example, because no finite sets of observation sentences are sufficient to deduce the existence of entities of those kinds. These considerations suggested that the logical relationship between scientific theories and empirical evidence cannot be exhausted by means of observation sentences and their deductive consequences alone, but needs to include observation sentences and their inductive consequences as well (Hempel 1958). More attention would now be devoted to the notions of testability and of confirmation and disconfirmation as forms of partial verification and partial falsification, where Hempel would recommend an alternative to the standard conception of scientific theories to overcome otherwise intractable problems with the observational/theoretical distinction.