The possibility of discovery or postulation of alternative 'natural' means of production would constitute a standing threat to any argument resting in part on a perceived absence of such means.

Several possible snags lurk. Gaps in nature would, again, suggest supernatural agency, and some take science to operate under an obligatory exclusion of such. This prohibition—commonly known as methodological naturalism—is often claimed (mistakenly, some argue) to be definitive of genuine science.[6] ‘Established’ limitations both on science and on nature can and have been overturned in the past. The possibility of discovery (or postulation) of alternative ‘natural’ means of production would constitute a standing threat to any argument resting in part on a perceived absence of such means. An...