Can Cyborg/ Trans-human reach enlightenment? When enlightenment is depended on a Human Body

There is a precedent that the Buddha set for letting in a 'different' set of humans, when he allowed women to join the Sangha, and his reasoning there we that the female mind had the capacity to reach the goal. Arguably, you can use this for any other 'different' life form.

The question is not whether AI (I assume cyborgs with human brains are human and ones with non-human brains are AI) will have access to the logical and reasoning aspects of the intellect that are necessary to recognise the Four Noble Truths. This is likely because the Truths are empirical and the human mind already has access to all empirical evidence within its frame of reference (subject to technology). So I don't think AI will be substantially different from 'Intelligence' to justify the 'Artificial`.

The question is whether all life, that has the capacity to comprehend the Noble Truths, can meditate and experience cessation (as the process of Jhanna may be dependent on the human intellect, I don't think it is initially necessary for distinct life forms in their exact form).

Personally I think this will happen soon enough with some animal species like dogs, which are already getting to 3-5 year old intelligence through cohabitation with humans - so they are not far from having a right to access to the Dhamma imo (being carbon based, their minds shouldnt be too different from human's).

Cyborgs and AI are too speculative at this point imo (although AI is heading down the neural network route, so same architecture as the human brain really), but I would find it difficult to believe that a conscious non-human intelligence would not be able to find a secluded place, sit down, and learn to have a peaceful abiding.

(though specifically for Cyborgs - since post human upgrades will have individualistic motives and end up dependent on the purpose of those upgrades, some Cyborgs may find themselves more stuck in Samsara.. militarily enhanced human minds, if they appear, will likely find it useful to have cognitive empathy downgraded.. This will obviously not help along the path. On the other hand, a Cyborg who's mind has been specifically enhanced for medical practice (the Buddha described himself as the doctor (not that one! ;) ), is likely to benefit from his enhancements in the practice of Buddhism.)

A cyborg will not have volition and without volition it can’t reach enlightenment!

I think volition is grossly misunderstood, I wouldn’t say in Buddhism, but mostly in this platform.

Volitional action as explained on some Buddhist texts or as understood by the Stoics (Prohairesis) can not happen in a cyborg.

Buddha has said, “Dear Bhikkhus, ones who would not realize this Dhamma is like this earth (in amount). Ones who realize this is like this small amount of soil on my finger nail.” If it is so for you and I, for us normal humans, what are the chances for a Human Cyborg to get to hear the True Dhamma?

For those who are not familiar with the term Cyborg - Cyborgs walk among us, though we see them as ordinary people. People who have robotic prosthetics generally qualify as cyborgs. Even people with pacemakers qualify as their existence depends partly on the continuing function of the electronic device that keeps their heart’s rhythm.

This Cyborg then has to be one who has cultivated the five ‘Sēkha Bala Dhamma’ – Saddhā (faith), Sīla (virtue), Sutha (Dhamma knowledge), Thyāga (generosity), and Paññā (wisdom of the Dhamma). Also this has to be a Cyborg that has religiously gone through the stages of listening, remembering, constant reciting, mental observation and ideologically understanding the Dhamma (Sutha, dhata, vacasa paricita, manasanupekkhita, ditthiya suppatividdha). Still when trying to put into practice in daily life, what this Cyborg has learnt, s/he faces many obstacles, difficulties, emotional pain, and conflicts that throw one away from this Dhamma path. This is due to the “Evil eye, evil mouth and evil tongue” of ones own making. So what do you think are the chances of this happening in this short lifespan?

This question is actually unanswerable. However a human being is vastly more complicated than a mere cyborg. The ability to achieve enlightenment. Whereas a cyborg would be created artificially, and is merely a mind and a body to accomplish some tasks. Therefore it doesn't seem plausible that a cyborg achieves enlightenment/Nirvana.

Edit: Understood the clarification. The changes you mention, like enhanced body parts or something, may enhance man's capacity in the outside world but the alterations to the body structure/parts will have lots of unintended consequences. We don't clearly understand the ramifications and chemical imbalances in the system. In the same way that we are able to interact seamlessly with mobile phones in our age of technology, man's capability will increase but seemingly at a cost of his/her own natural technology called the mind and body. It is still an artificial way rather than a natural style.

Let's take a simple example. Are you able to meditate well with all the interactions you are having with your computer and mobile phone and Facebook/Twitter etc.,? If you are able to think about this you will understand how spiritual goal is unrelated and artificially enhancing life spans or body parts will be detrimental to a person's spiritual growth. Understand that man's body is already a well engineered machine. Just because we are insensitive to that and don't treat it well, doesn't mean our body is not an awesome machine. Our bodies are a vehicle too. We must oil it well and consume well in order to keep it running. But it has its life span and capabilities and we must respect that.