But one cannot count on this being the case, and in the study of language it surely is not the case.
There is no way of proving that this cannot be the case, but there is also not the slightest reason to suppose that it is the case.
Fear and joy may both cause cardiac palpitation, but in one case we find high tonus of the skeletal muscles, in the other case relaxation and the general sense of weakness."
This is the sort of belief which, in the case of memory, we expressed in the words "this occurred"; or which, in the case of a judgment of perception, makes us believe in qualities correlated with present sensations, as e.
In this case we find again, as we found when we were discussing words in general in the preceding lecture, that images are not logically necessary in order to account for observable behaviour, i.e. in this case intelligent speech.
In this case, as with the supposed case of the cuckoo, I can see no difficulty in natural selection making an occasional habit permanent, if of advantage to the species, and if the insect whose nest and stored food are thus feloniously appropriated, be not thus exterminated.
In the case of animals and plants with separated sexes, it is of course obvious that two individuals must always unite for each birth; but in the case of hermaphrodites this is far from obvious.
If this were the case, then, obviously, an infinite hierarchy of events with texts would have to occur in order for any case of rule-governed behavior to occur.
In the one case, what happens is that I remember the content "eating my breakfast"; in the other case, I assent to the content "Caesar's conquest of Gaul occurred."
Metaphysical necessitation could be taken as basic, or perhaps better, we can define it in terms of subjunctive conditionals: D metaphysically necessitates S when a subjunctive conditional of the form 'if D had been the case, S would have been the case' is true.