All experiences come and go. If enlightenment cannot be undone, then it must be knowledge/understanding. Experience comes and goes, but knowledge, if true, is permanent.
An experience can be said to be "enlightening." In that case the understanding has come or been extrapulated from the experience. Experience alone will not last, but understanding will, because like 2 + 2 = 4, true understanding is permanent.
An experience can be said to be "enlightening." In that case the understanding has come or been extrapulated from the experience. Experience alone will not last, but understanding will, because like 2 + 2 = 4, true understanding is permanent.