[evol-psych] Re: News: Cracking the epigenetic code, advancing our understanding of disease
Your focus on the math caused you to totally miss the point made by
behavioral geneticists: The volume of all the triangles will be the
same (big f&^$ing deal!)...but the important characteristics of those
triangles will be very different. Some of those triangles will no
longer fit into our cars because their length is too great.
--- In firstname.lastname@example.org, mark hubey <hubeev@...>
> On Oct 31, 2012 7:57 AM,
> > An example sometimes given is the area of a rectangle. It is
> > nonsensical to ask about the separate contributions of length and
> > to the area of a single rectangle because area is the product oflength
> > and width.x?
> Come on, now. I am sure you can interpret this very easily
> A = xy
> dA = xdy + ydx
> How much of the contribution to the change in A comes from change in
> Obviously ydx. If x, y are genes and environment then the change ingenes
> is multiplied by env.we
> Area does not exist without both length and width. [An
> > organism does not exist without genes and environment.] However, if
> > ask, not about a single rectangle but about a population ofrectangles,
> > the variance in areas could be due entirely to length, entirely toan
> > width, or to both. Obviously, there can be no behavior without both
> > organisms [and its genes] and an environment. The scientificallyuseful
> > question is the origins of differences among individuals.this
> > For example, the heritability of height is about 90 percent, but
> > does not mean that you grew to 90 percent of your height for reasonsof
> > heredity and that the other inches were added by the environment.What
> > it means is that most of the height differences among individualsare
> > due to the genetic differences among them. Heritability is astatistic
> > that describes the contribution of genetic differences to observedparticular
> > differences among individuals in a particular population at a
> > time. In different populations or at different times, environmentalor
> > genetic influences might differ, and the heritability estimates insuch
> > populations would differ" (Plomin et al, Behavioral Genetics, Fifth
> > Edition, 2008, p. 85-6).
> > --- In email@example.com, Edgar Owen
> > edgarowen@ wrote:
> > >
> > > Sonny,
> > >
> > > Correction. Taller parents tend to have taller children and vice
> > versa. Height IS CLEARLY HERITABLE.
> > >
> > > Why would anyone think otherwise?
> > >
> > > Edgar
> > >
> > ><snip>
- --- In firstname.lastname@example.org, "clarence_sonny_williams" <clarencew@...> wrote:
> I am confident that those who scoff at such scientific facts have aDWZ:
> hidden sociopolitical agenda in mind. It is a shame they are so
> cowardly about this sociopolitical agenda that they refuse to reveal it.
I wouldn't be surprised if they already have plans drawn up for a Gulag, so that when they seize power they will have a place to send the PC liberals. Fortunately, those dreams of power are about as plausible as their "scientific" theories.
Donald W. Zimmerman
Vancouver, BC, Canada