By logical or philosophical possibility I mean that there is...

By logical or philosophical possibility I mean that there is nothing in the intellect, conforming to what it knows of previous laws - (preceding the experiment) - that could justify the rejection of a task nor decide that it could not occur.

Say, for example, the grouping of three oranges into two equal parts, this is logically impossible, since the intellect knows - before carrying out such an experiment - that three is an odd number, thus it is impossible to divide it into two equal parts, first it would turn into an even number, which would be a contradiction, which is impossible in logic.

But if a man were to be exposed to fire, or if he were to go to the sun without burning, that would not be impossible from a logical point of view, since there is no contradiction in the assumption that heat does not penetrate into a body of lower temperature from one of higher temperature. That would only run contrary to the experiment which proved that h eat actually penetrates into a body of lower temperature from one of higher temperature until both bodies get an equal temperature.

Therefore, we come to realize that logical possibility has a wider scope than scientific possibility and that the latter is wider than practical possibility. There is no doubt about the logical possibility of the prolongation of human life for some thousands of years, because that is not impossible from an abstract intellectual point of view, also there is no contradiction in an assumption of this sort, since life as it is understood does not fathom sudden death and no one can dispute this fact.

Also, there is no doubt or controversy that this prolonged life is not possible from the practical aspect, as is the case in going down to the depths of the ocean or ascending to the moon.

That is because science with what it owns of modern means and instruments, that were made available by concomitant human experiments, cannot prolong human life for hundreds of years, this is why we find that even those among people who are more eager about life and more able to utilize scientific possibilities can only live to the extent of what is usual.

As far as Scientific possibility is concerned, there is nothing in science, nowadays which could justify the denial of that fact from a theoretical point of view. This inquiry is in reality related to the nature of the physiological interpretation of the phenomenon of old -age and decrepitude among people.