Richard Beck asks us to imagine spitting into a Dixie cup…and then drinking its contents.
Disgusting, right? Although this seems like the natural reaction to have, it’s actually rather odd, if you think about it. We swallow our own saliva all the time. “But,” as Beck notes, “the second saliva is expelled from the body it become something foreign and alien. It is no longer saliva—it is spit.”
This is the fifth post of a twelve-part series for Spectrum’s 2013 Summer Reading Group. Each post will be drawn from chapters of Postmodern Apologetics? by Christina M. Gschwandtner.
Part of the difficulty of proving any scientific theory is due to the inductive nature of scientific reasoning, at least, in the empirical sciences. One makes repeated observations, and from those observations, draws inferences. Inferential reasoning, as David Hume points out, provides us with probability, but never certainty. (We’ve seen this truth demonstrated, most recently in the news, with the Casey Anthony trial.)