TheRev wrote:Is the handle any longer, or is it just the case that the likelihood of persuading others is more remote, given the quality and quantity of the evidence? In other words, I don't think it is necessary to set higher bars for fringe theories. Such theories come nowhere close to clearing the same bar one expects of any theory.
I think I see what you're saying. We don't want to allow the force of a pebble applied to the lever, and that's true. But whether that sets a higher bar or not is a matter of perspective, and goes back to defining evidence in the first place. Whether we're saying evidence is low quality or doesn't rise to evidence at all could be saying the same thing. In my example it doesn't rise to evidence at all, and so it's not setting the bar higher.
I think the lever model shows why the apologists want it to be considered evidence. A small but high quality discovery that lends credibility to the theory that Hitler is alive and building an empire on the moon has real paradigm shifting power compared to a big and high quality discovery confirming smoking causes cancer. In fact, it makes you step back and wonder, how is it possible to have a small but high quality discovery for a fringe theory in the first place? It may not make much sense.
Every apologist has cited Kuhn at some point to defend the Book of Mormon but Kuhn would block what Smoot is trying to get out of this. A scientific paradigm is highly resistant to change. For a "small" discover like NHM, you interpret within the reigning paradigm, meaning, you wouldn't be looking for NHM in the first place. If history as we know it can't possibly hold the discovery, then an alternative model necessarily arises. So in EAs example of the ripples, because you can account for ripples under the reigning paradigm -- in Kuhn -- there is no need for other suggestions.
The implicit point is Kuhn's framework is that evidence is "theory-laden", meaning, you can't really talk about evidence purely in the abstract and tally it up for one paradigm vs. another. When looked at this way, it helps when talking about small but high quality evidences for bizarre propositions.