This is Kawaguchi Hidetoshi. This is my humble answer to the question.
I think this is a very incisive point of view.
Due to the character limit, it is only for 2, but the relationship between people with dementia, those with memory loss, or those with babies or intellectual handicaps, and enlightenment...
I actually wondered about it a long time ago, and I thought about a lot of things.
Actually, at the end of the day, this is a matter of the state of mind, but as long as there is an “obsession with truth” (obsession with truth, an ignorant mind that sees oneself or appearance as a reality) that has existed since birth, worries will occur, and in sentient beings that are in reincarnation, everyone, including those mentioned above, will not change that much.
According to Buddhism, unless “ignorance” (fundamental ignorance) and “bad work” from past lives are treated, it will not be easy to get out of this reincarnation of hesitation and suffering.
Well, if you ask if you don't understand, that's not the case. The potential for enlightenment is that if it is a sentient being (emotional) with a “heart,” there is a possibility of enlightenment, including those with dementia, those who have amnesia, or those with babies or intellectual handicaps. (Here, I don't want to use the word “Buddha nature,” which is easily misunderstood... it is what is called “Buddhism.”)
In the Mujo Yoga Tantra of Esoteric Buddhism, they say “light,” or “Kyusei no dairaku chi,” but in short, it is “a basic element for understanding,” and just because it exists, it does not mean that you can be enlightened without doing anything. Of course, causation (cause and condition) is necessary for enlightenment.
Broadly speaking, it is “wisdom” and “good fortune” (merit) based on the “Bodhi Heart,” and by accumulating these two resources through Buddhism and eradicating “affliction disorder” and “intellectual disability,” it is possible to reach enlightenment.
Also, in Buddhism, there is a way to arrange for those who are unavoidably in this world (not) to walk Buddhism so that they can walk Buddhism in the next life and beyond. Simply put, it is a memorial service and devotion, but for the sake of everyone's enlightenment, if there is room to practice Buddhism, then it is something you want to make a steady effort. Let's work hard together.
Kawaguchi Hidetoshi Gassho