proveability

"proveability" to it, in rebuttal to the common accusation that the whole study of religious origins is too vague and uncertain to have much value.

Pagan and Christian creeds: their origin and meaning Edward Carpenter 1886

Though the worship of Sun-gods and divine figures in the sky came comparatively late in religious evolution, 1 have put this subject early in the book (chapters ii and iii), partly because (as I have already explained) it was the phase first studied in modern times, and therefore is the one most familiar to present-day readers, and partly because its astronomical data give great definiteness and ` ` proveability '' to it, in rebuttal to the common accusation that the whole study of religious origins is too vague and uncertain to have much value.

Pagan and Christian Creeds: Their Origin and Meaning 1920