On Wed, Mar 20, 2013 at 12:22 PM, Bruno Marchal <marc...@ulb.ac.be> wrote:
> >> If when X happens Y always happens AND when X doesn't happen Y never > happens then we can say with great confidence that X causes Y because > that's what the word "causes" means. > > > Does this not imply that X causes Y if and only if Y causes X? > The "if-then" operation as well as the very word "causes" implies a direction to time. If X then Y AND if not X then not Y then X causes Y. We could get into the question of why time seems to have a preferred direction if you like. John K Clark -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To post to this group, send email to everything-list@googlegroups.com. Visit this group at http://groups.google.com/group/everything-list?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
