Looking at this (thanks anoncept): http://psas.scripts.mit.edu/home/get_file.php?name=STPA_handbook.pdf http://psas.scripts.mit.edu/home/get_file.php?name=STPA_

Looking at this (thanks anoncept): http://psas.scripts.mit.edu/home/get_file.php?name=STPA_handbook.pdf http://psas.scripts.mit.edu/home/get_file.php?name=STPA_hand... I'm not sure it takes us all that much further (for general purposes) than John Stuart Mill writing on causation in the nineteenth century - he did very well creating a philosophical foundation for causation-talk. (And the STPA handbook is excellent, as well.) In any case, Mill is the original source for the modern understanding plural and complex causation.