OK then, back to the roadmap which I posted (oh goodness) 3 years ago now.
Over the last rather… “spread out” batch of “planned” posts we’ve used the handy tools of abstraction and social negotiation to answer some standard philosophical questions. Today we’re going to add another useful concept to our toolkit, and use it to take on metaphysics (no not all of it, but a lot of it).
The concept we’re going to deal with today, as suggested by the title, is speculation. Speculation is a fairly ordinary word, and I’m using it in the ordinary sense, so there’s really not a lot going on here. It’s can be a useful thing to speculate, and it’s a critical component of the second step in the scientific method. However, this means that testable speculation is science, not philosophy. Perhaps poorly-performed science, but still science.
Conversely, untestable speculation wanders dangerously close to meaninglessness (just as I am now wandering dangerously close to logical positivism). It can by definition have no influence on reality whatsoever, and so nothing speculated in this way can matter or exist in any useful sense.
Note: it is of course important to distinguish pragmatically-untestable speculation (e.g. quarks in the mid-twentieth-century) from actually-untestable speculation (more along the lines of Russel’s Teapot).
Classic metaphysics (especially of the Greek variety) tends to fall mostly in the was-actually-bad-science camp, for example Thales of Miletus who believed the underlying principle of nature was that everything was made of water. Other metaphysics (e.g. free will) will have to wait for a later post.