Today in ghost199.pl we will try to make the AI error-free even before we go back to adding in the functionality already present in some of our obsolete AI Minds. For instance, we have not yet coded the negation of verbs into our Perlmind source code. Consequently, if you tell the AI something like "You are not a boy", it fails to attach a negative juxtaposition $jux flag to the verb during comprehension of the input sentence. A few cycles of thought later, the AI may then assert "I AM A BOY" because it has been informed of the negated proposition without the ability to process the negation.
We debug the AI by letting ghost199.pl think on its own without human input. Eventually the Perlmind erroneously says "I AM ROBOTS", which is grammatically incorrect because of the plural noun. We intuit immediately that the AI is retrieving the most recent engram of the concept #571 "ROBOT" without insisting on a singular number. We inspect other recent thoughts of the AI and we see that it thinks "KIDS MAKE ROBOTS" but it stores the word "ROBOTS" as a singular noun. We must look and see if the InStantiate() mind-module has a proper $num flag for storing "ROBOTS" correctly as a plural noun. We see that the OldConcept() module looks up the stored num(ber) of a found engram and tentatively assigns the same value to the $num flag, but there really needs to be an override if a different value is needed.
In the otherwise obsolete but still rather advanced 24jul14A.F version of MindForth, some AudInput code checks for an "S" at the end of an input noun as a reason to assign plural number to the noun. Let us try to implement the same test in the Perl AI. First we test for the presence of an 83=S, but we must also make sure that the "S" is the final character of a noun. First in OldConcept() we comment out the line of code that was transferring the found num(ber) of a noun to be the same number for a new instance of the noun, regardless of the presence or absence of a terminating "S". Then we notice that "ROBOTS" stops being stored as singular, and becomes plural. We create a variable $endpho to hold onto each previous character in AudInput() to test if a word ends in 83=S. Thus we are able to store a plural number if a noun ends in "S".