 The rationale behind (1) is that \(p(F\mid \neg D)\) is quite small, since there are so many ways the physical laws and initial constants could have been, almost all of which would have yielded a universe inhospitable to life. Without a designer to ensure hospitable constants and conditions, a hospitable outcome would have been massively improbable. But \(p(F\mid D)\), on the other hand, is fairly high: the envisioned designer’s aim in creating the universe was to create life, after all.