Popper's version of Haldane's argument against materialism

 Here. 

The context here is that I have been  working on a paper on the history of arguments from reason. Balfour seems like the first post-Darwin version of the argument, and Haldane is interesting because he uses the argument against materialism, then develops a rebuttal to his own argument based on computers which I think more closely resembles a lot of people's responses than did Anscombe's rebuttal. Popper is interesting because he defends the earlier Haldane against his later self.