Several prior posts speak about “reality.”
“Reality” is an abstract term with many different meanings in different contexts.
So it seems reasonable to specify as best we can what we mean when we use this word and what we’re trying to point to.
Often, “reality” is used to mean the physical domain in which everything occurs, such as the universe.
Yet measuring “reality”to 12 decimal points clearly indicates that there is a significant amount of “reality“ that is left unmeasured, untested, and unknown.
And perhaps even untestable.
Science is fundamentally about statistical inferences. There are no absolute “right“ measurements or answers, even when it comes to classical Newton mechanics.
And in quantum mechanics, measurement outcomes appear to be utterly random and inherently probably probabilistic. According to Neils Bohr and a many other quantum physicists, whatever “reality” is present prior to a measurement is fundamentally beyond apprehension, experimentation, or understanding.
So, again, “reality” is a fuzzy term and, as used with respect to the “universe” as used in the materiallist/scientific sense , is not particularly germane to practicing the Dhamma…
The Buddha’s description of the world and the All is: whatever can be experienced and known via and within the six sense fields. SN35.23.
He does not specifically deny an “outside reality“ but says that with respect to the purpose of the Dhamma— the cessation of all dukkha— that what can actually be experienced via the six senses is sufficient to this practice and purpose and is all that can be directly “known“ — in this context, this is the “reality” that we can know and work with.
When it’s internalized, Dhamma practice takes place in the world of our experiences through the six senses, other aspects of the Path such as kamma and rebirth become clearer.