Travis considers the history of Western thinking from Pythagoras and the pre-Socratic philosophers to Philo of Alexandria and onward.
Sometimes you don’t need a rigorous logical, scientific, or mathematical demonstration to reveal evidence of design in nature.
For my part, I think it’s better to approach the data without assumptions and to let the evidence speak for itself.
Mathematics has been at the foundation of modern challenges to neo-Darwinism, while those challenges are met mostly with handwaving.
A number of theories as to how life could have originated through entirely unintelligent processes have been proposed, but none are plausible.