Sure, and since 1995 a lot of work on palaeodemography has been done and it is all consistent with excluding a bottleneck of two in the human lineage.
Even though my reading of abstracts is not as extensive as yours, I am not seeing an intention or goal of excluding a bottleneck of two in the human lineage consistently in every paper.
In fact, my introduction to demography was in a paper which included the gathering of a variety of influences on ancient populations so that they could be translated into mathematical formulas for computer models. The initial scope of that section was first gathering data. Doing a bit of research on one of the researchers, I would say that her intentions or goals were far broader that a narrow bottleneck.
Quite so - but what other disciplines would they be and what evidence do they put forward against the conclusions of genetics in this case?
Alec
evolutionpages.com
This reminds me that I need a better dictionary with more entries from the scientific sector. Recommendations? Nonetheless, you have a good point which basically means that I should include the area of expertise of the researchers in my own data file.
Regarding your question about the evidence put forward against the conclusions of genetics – At this point, I can better serve scientific inquiry by searching for the proper perspective of these conclusions.
In his research paper, “The Myth of Eve: Molecular Biology and Human Origins” Francisco J. Ayala opens his “Population Bottlenecks” section with: “Neither the mtDNA results nor the ZFY results lead to the conclusion that narrow population bottlenecks consisting of one or very few couples have occurred in human ancestral history.” Ayala is often cited in the footnotes of research papers. Consequently, there is the strong possibility that his studies of mtDNA and ZFY are accurate.
The question which needs to be answered is: What in the harsh environment of early earth or in the full nature of the human being influences the material elements of mtDNA and ZFY? As matter, mtDNA and ZFY would be under the influences of various evolutionary theories.
It seems to me that evolution of material beings includes all kinds of possibilities for mutations, i.e., changes do occur because of this or that. Having read only a small portion of the theories regarding some kind of “junk” in genetic make-up (my apology for not using correct terminology), it is obvious that not everything is certainty regarding relationships within cell structures etc.
The following sentence by Ayala is taken out of context. As the paper progresses, Ayala deals with the possibilities involved. However, I present it because it is the scientific recognition of the complexity of research. “As noted earlier, estimates of mean coalescence time as a function of N, and vice versa, have large variances.”
All of us, especially myself, like to cherry pick when it comes to reading research. My point is that there is a definite need to recognize the complexity of research regarding the human species. Most people have a gut instinct that there is something essentially different about the human species. The question remains: How does that complex difference, whether it is looked at as degrees or as kind, influence the origin of humanity?
Blessings,
granny
All human life, from pre-history to tomorrow, is worthy of profound respect.