“Thus, it does not seem clear (to us) that there is truly a unified research program here, under the name of materialism. The apparent consensus could be something of a mirage, with the only thing holding it together being a denial of the Soul Hypothesis. If so, it begins to look more like a shared assumption than a shared discovery. And of course there can be consensuses based on fashion and the spirit of the age, as well as consensuses based on observation and reason. Even scientists must always be on guard to make sure they are part of the latter rather than the former. The honorable mantle of the scientist conveys no inherent infallibility in this regard.”