The intelligent design movement aspires to create a new scientific paradigm which will replace the existing Darwinian paradigm of evolution by random mutation and natural selection. However, the creation of such a paradigm is hampered by the fact that the movement pursues a 'big tent' strategy that refuses to make a choice between young-earth creationism, old-earth (progressive) creationism, and divinely directed natural selection. The latter two options are discussed in some detail, and it becomes apparent that either one presents difficult (...) challenges that the movement shows no signs of overcoming. It is concluded that there are not good prospects for the creation of an alternative paradigm in the foreseeable future. (shrink)

Despite wide recognition that speculation is critical for successful science, philosophers have attended little to it. When they have, speculation has been characterized in narrowly epistemic terms: a hypothesis is speculative due to its (lack of) evidential support. These ‘evidence-first’ accounts provide little guidance for what makes speculation productive or egregious, nor how to foster the former while avoiding the latter. I examine how scientists discuss speculation and identify various functions speculations play. On this basis, I develop a ‘function-first’ account (...) of speculation. This analysis grounds a richer discussion of when speculation is egregious and when it is productive, based in both fine-grained analysis of the speculation’s purpose, and what I call the ‘epistemic situation’ scientists face. (shrink)