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Yet even as they stay anchored to these core commitments , they are flexible about how and when they act on them . Using Neutron activation analysis on this and other samples , they determined that Taylor had not died of arsenic poisoning . Like thousands of other Californians who fled the fires , they knew they would probably never see their homes again . Rather than forcing their businesses to absorb too many unknowns , they tightly constrain the world that they serve . Accordingly , having to deal with persons of all classes and of all different nations , they find it necessary to have casuists assorted to match this diversity .