joseph halpern ppjmcgncscornelledu hi lotfi certainly true definition causality depnds causal structure way tarskis definition truth depends relational model also true times might hard construct appropriate structural model dont know necessary details way sometimes difficult describe appropriate relational model moreover people may often disagree structural model best describes situation may disagree facts matter judea call context equations roughtly speaking causes indeed believe lawyers often implicitly argue issues court judea viewed feature definition dependeot model tarskis definition truth well aware people might well argue appropriate model mean causality undefinable far im concerned analogy tell john swedish ask true johns hair red would say simply havent given enough details determine truth sentence could say details difficult obtain john currently mountain climbing accessible email even people disagree johns haircolor none doesnt mean truth undefinable think quite possible come useful definitions causality moreover definitions guide us information need answer questions pose first example marketers statisticians believe techniques determine whether increase sales caused increase advertising budget think would agree didnt give sufficient information determine causality may agree disagree regards joe dear joe many thanks clarifying comments work judea pearl major contributions development better understanding causalitya concept position centrality science particularly ai sticky point theorya point alluded comment joseph mitola iii definition causality conditioned existence structural model problem realistic settingssettings exemplified problems 1 2 3valid structural models hard impossible construct example problem 1 increase sales may result increase advertising rainy weather better economy raising prices competitors etc model factors combine produce increase sales applies problems 2 3 case problem 3 noted contexts causal strength may equated degree responsibility contexts different meanings problem 3 degrees responsibility assessed precisely specifically degree responsibility would high knew gun would used kill b would low idea gun borrowed kill someone assessment degree responsibility social settings lend scientific analysis matter convention subject debate message june 2nd made two statements causality undefined b causality undefinable far seen definitions causality applicable problems 1 2 3 causality undefinable know mathematics many problems solution widely unrecognized many concepts intrinsically lend precise definition example concept summary another example concept relevance view concept causality falls category general setting issue definability related issue precisiation addressed papers fuzzyalgorithmic approach definition complex imprecise concepts int jour manmachine studies 8 249291 1976 causality indefinable towards theory hierarchical definability intelligence materials world selected papers ipmm2001 third international conference intelligent processing manufacturing materials editors ja meech et al crc press boca raton 2934 2002 precisiated natural language pnl ai magazine vol 25 3 7491 2004 generalized theory uncertaintyprincipal concepts ideas appear computational statistics data analysis define concept c start perception c precisiate perception c describing meaning definition language definition language natural language precisiation referred mhprecisiation standing meaning h humanoriented definition language mathematical language precisiation referred mmprecisiation precisiation cointensive sense mmprecisiation meaning definiens good fit perception c within framework asserted possible construct definition causalityespecially inverse causalitywhich general mmprecise cointensive major obstacle noted message problem decombination warm regards lotfi lotfi zadeh professor graduate school director berkeley initiative soft computing bisc thu 07 aug 2008 034938 0400 uai causality