If you type various versions of this question into Google you see that there are people discussing it on line. I have even seen articles on Buddhism which states that the goal is to achieve nirvāṇa. Buddhism does not have KPIs and personal development planning, nor does your line manager tear you off a strip if you don’t achieve your goals.
I’ll speculate whoever considers nirvāṇa a goal is a long way indeed from said goal. He is in a gaol of Western thinking.
In various school of thought nirvāṇa is when the causal vehicle {Soul or reincarnating Jiva} has been blown off. This means there is no requirement to reincarnate, a strictly human thing. Humans are “bound” to the wheel of rebirth. Someone, some being, who has done that, nirvāṇa, is strictly speaking no longer human. In the context at death the being who has attained nirvāṇa achieves the state of parinirvāṇa at the dissolution of the meaty incarnate form. Thereafter “they” remain formless.
We could get into the gender debate about pronouns. What pronouns do you use for some entity which has no body, no observable physical plane presence? What is the correct pronoun for a fully enlightened Buddha? It?
The problem I have with enlightenment as a concept is that is enlightenment an absolute or a relative term? It might be said that someone got enlightenment, does that mean that they are a fully enlightened Buddha or does it mean that they are little less heavy than before. They have attained a quantum of enlightenment, a bit, one step further up the ladder. They are lighter, less dark and thereby enlightened. To progress one gains enlightenment in a stepwise fashion, realisation by realisation. At nirvāṇa the being is lighter because it no longer has a causal vehicle or personality, notions of self have dissolved. It is enlightened, unburdened.
There is the concept of returning high attainment Bodhisattvas, who on death put off the attainment of parinirvāṇa and come back of their own free will to teach. Because they have no causal vehicle, they create a nirmāṇakāya emanation for such a purpose. If I understand it correctly there may be many of these in the Tulku tradition. Arhats can be seen as selfish because they do not come back. But that is a transference of human personality onto someone who has no self. I have seen it prejudiced that Bodhisattvas are good, and Arhats not so. Human folly, methinks.
In esoteric thinking the end of the causal vehicle comes at the fourth initiation. If one cross references, this is nirvāṇa or blowing off. If I understand it correctly this phenomenon is associated often with physical plane death {but not always}. One gets nirvāṇa and sharpish thereafter parinirvāṇa. In that school of thinking there are a few more stages of development, the other initiations, after doing what Siddartha did in getting planetary nirvāṇa.
One might rephrase the question, “how many fully enlightened beings are there?”
In the esoteric school of thought the fourth degree initiate goes on to take the fifth and become what some call masters. This happens, according to my reading, relatively soon.
I think most people would struggle to envision or envisage a “living” awareness or consciousness in the absence of a physical plane body. So, people invent worlds and dimensions or abodes where they might picture some enveloping form even if that be nebulous. The inventions are inspired by life on earth. Being superstitious people like signs and miracles as circumstantial evidence or proof of nirvāṇa or parinirvāṇa. There must be a rainbow or a comet. If it is a wholly natural part of evolution why would this happen? It is kind of no big deal. There is a desire for sanctity and holiness where they may just be a natural evolutionary process.
The question itself seeks to quantify and scale because people like to compare, to play top trumps.
“My God is better and more real than yours”, being a root of many wars.
Going a step further “are” implies existence or being. Can something exist if there is no form, no measurable lump of meat. If something is formless, is it?
Instead of quantifying we may now rephrase. “Are there enlightened beings?” “Do they exist?”
“It’s life Jim, but not as we know it!”
Astrobiology and astrochemistry are looking for life in a chemical-biological entity with a physical existence measurable by modern instrumentation. The assumption being that life can only exist in some kind of form, or particularly a corporeal form no matter how small. Science requires a form {and perhaps reproductive urge} as a basic component of life and its definition.
A formless Buddha after paranirvāṇa would not technically be alive according to human definition.
So maybe according to science enlightened beings do not exist.
The answer is therefore zero and not 42….
Which poses the ancillary question does, zero exist or not?
Dreamyoga 