here's a new science #rant on #aging :)
as far as biology can tell, aging is best understood, #philosophically at least, as part of a #developmental continuum between #embryogenesis & death, which is pre-programmed somehow. therefore, we cannot in principle place precise "boundaries" or "cutoffs" between development, adulthood, and seniority. In strict #biological terms, they are all part of one continuous #program. a complete explanation of aging therefore requires complete #devbio knowledge
So, if you're on board with what's stated above, then please consider the following: decyphering the (unknown) "aging program", if you will, entails a two-level challenge: one, we must (with some sufficient degree of correctness) infer what the language of this aging program is, in terms of its programmatic structure, and its corresponding evolutionary/biological/biophysical mechanisms. two, we must then again infer what the content of this program is, which is analogous to decrypting a cypher
i.e., we have a decryption problem wrapped inside of an inverse (system identification) problem: we don't know the language, the rules, or the message. all we have are whatever biological insights we can gain from our rather short-timescale observations using rather perceptually-limited instrumentation and cognitive abilities. as is often the case in biology, as in cosmology, it is the vastness of the unknown that makes any attempt at a complete explanation extremely error-prone. like infinity!