good move, rosan, it appropriately keeps our talking in the domain of language. i would not want to substitute explanation for cause, though. we know of causal explanations, functional explanations, structural explanations, explanations invoking evolution, explanations in terms of synchronicity, explanations that focus on the actions of a devine ruler or evil, explanations in terms of intentions, explanations in terms using anything that makes sense to you. klaus -----Original Message----- From: PhD-Design - This list is for discussion of PhD studies and related research in Design [mailto:[log in to unmask]]On Behalf Of Rosan Chow Sent: Friday, January 07, 2005 4:21 PM To: [log in to unmask] Subject: Re: causality and pluralism Dear Jonas could we forget about 'cause' (such a loaded word), but use 'explanation' instead? (e.g. i learn that 'intention' is not a (efficient) cause of action. 'intention' can, however, be an explanation for action). and explanation rather than cause, seems to me, concerns design more. (e.g. if we look at how user study is conducted, we might notice that design team is more concerned with intentional explanation than with causes for user action). for your map of causes/explanations, i wonder whether mapping from 'determinism' to 'free will' to (i will add 'no explanaton') can be accompanied by an extra dimension, namely from general to specific. just a thought. rosan Wolfgang Jonas wrote: Dear all, late in the debate, and running the risk to simplify things that have already been discussed in a highly elaborate manner... Nevertheless, what do you think of David Hume's concept of causality and its usefulness in the design context? Probably difficult to accept for some: it always requires an observer. Yet, in my view it provides a framework, which comprises the entire (continuous?) spectrum from pure "determinism" (based on 1st order observation, e.g. the motion of planets) to causation (by "accident" or by human "intention", based on 2nd order observation; also "accident" is an interpretation of an observation). The most important thing for me: trying to clearly position the observations in the spectrum mentioned (which requires a mapping of concepts of causality) and trying to understand why someone (including yourself) asserts something.By the way: My intention (as I interpret this intervention in the debate) is motivated in my urge to relate things / concepts, to create systems of understanding (for myself), to create some order in the chaos of languaging... The philosopher who produced the most striking analysis of causality was David Hume. He asserted that it was impossible to know that certain laws of cause and effect always apply - no matter how many times one observe them occurring. Just because the sun has risen every day since the begining of the Earth does not mean that it will rise again tomorrow. However, it is impossible to go about one's life without assuming such connections and the best that we can do is to maintain an open mind and never presume that we know any laws of causality for certain. This was used as an argument against metaphysics, ideology and attempts to find theories for everything. A.J. Ayer claimed that his law of verification was an application of Hume's teaching, yet it was, in fact, exactly what Hume argued against - assuming that empirical observation could lead to definite knowledge. Karl Popper clarified matters with his law of falsification, which is more in line with Hume's teachings that any new experience could disprove a law that had been previously thought to be certain.http://en.wikipedia.org/wiki/Causality#Hume Jonas --