"all humans ought-not to kill another"
The justification of the above as moral fact is as follows;
One point is the moral facts [within a moral FSK] of ought and ought-not are inbuilt within nature, i.e. human nature.
Here is an analogy to begin with;
- For example, DNA/DNA wise all humans are "programmed" with the ought-not to touch things within certain degrees of hotness or be exposed to heat in excess of what is bearable by any normal human being.
This 'ought-not' in relation to heat is programmed via a complex neural algorithm [pain, emotions, motion, reflex actions, etc.] that is connected with the sense of touch, sight, and perhaps smell [burnt] or even hearing [thunder and the raging of fires].
Whilst the ought-not of heat is inherent in all humans, if this is not activated instinctively, the person will soon learn from experience of what degree of heat must be avoided to avoid endangering their life.
So avoiding hot objects is not purely learning from experience [nurturing], but the underlying factor is the inherent [nature] ought-not regarding heat.
Obviously the above is a fact of nature, i.e. human nature
I have justified the moral fact,
"all humans ought-not to kill another"
is programmed as a neural algorithm within all human beings.
Since this is a very critical moral ought-not algorithm, this instinct is very strong in the majority of people, thus easily triggering their intuition on this issue.
This is why the majority of people do not simply kill any human even when they are "programmed" with an instinct to kill.
For a percentile of humans, the above ought-not "program" is not very active or had been damaged [e.g. psychopaths] thus they are prone to kill, but that do not mean the inherent moral ought-not to kill 'program' is not existing within them.
What I am doing is using reason to abstract the above moral fact from empirical evidence and philosophical reasoning and to justify the existence of the above moral ought-not or ought [depending on how we phrase it] as a moral fact within nature, i.e. human nature.
This moral fact, e.g. "all humans ought-not to kill another" is represent by a physical neural algorithm with connections to other part of the body. The effectiveness of his moral fact, i.e. the ought-not can be tested and is evident in a psychopath where the algorithm is not working as it should be.
The moral assertion;
"all humans ought-not to kill another"
is a moral fact as justified to be a True Moral Belief.