post to FRIAM 1/20/07

marking a map to help navigating the sysems territory

One of the things that Roger’s comments bring out about the discontinuities you find in tracing organism growth (epigenesis) is the question of markers. Normal single growth curves are famous for representing huge changes and having almost no markers at all to signify what’s really happening.

There really are only two places on them that are easy to mark, the upward and downward inflection points (¸¸ .·|´ ¯ and ¯`|·. ¸¸ respectively). The origins and endings of the curves seem completely disguised by the smallness of events at their tails.

Elsewhere in the history of their changes the wide distribution of seemingly unconnected but well orchestrated events makes it very hard to single out any particular thing for significance. The inflection points, however, can be made quite mathematically precise, and do approximately correspond to matching major changes in what’s going on. Continue reading Quite easy to mark →