This ignorance, which obscures the ultimate reality, is necessary because without the realization of this ignorance, true knowledge can not be achieved.
As long as it provides relief and a sense of certainty, no ultimate reality is necessary to reinforce the habitual belief.
Cellular aging would therefore be the ultimate organizing principle, necessary for long-term maintenance of cellular function.
Marriage, in Longstaff's Fairyland, involves both compromise and work – and isn't necessary for ultimate happiness.
Although these efforts are necessary, the ultimate benefits can only be realized if the relationship between chemistry and the behavior can be understood and predicted.
Indeed, in the case of stinging worker honey bees, there is not only cooperative labor but also, when necessary, the ultimate sacrifice in defense of the hive (at least where the invader is a mammal, stinging of which proves fatal to the bee as the barbed sting is torn out upon being deposited in the victim).
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Aquinas claimed to have established the existence of God as the unmoved mover, as the ultimate efficient cause, as the necessary being, as the perfect being, and as the final cause of all beings.
Philosophical pragmatists and empiricists, for example, hold that while a successful theory should describe experiments as accurately as possible, it has no necessary relation to ultimate reality, partly because one can never say whether new experiments will give new results and force changes in the theory.
For one thing, it is doubtful that ultimate concern is either a necessary or a sufficient condition of a religious attitude.
