This thread is funny. "Optimal" is obviously a term that cannot be defined precisely in regard to anything other than conceptually from a specific unique viewpoint or perspective. While "optimal" may change, as perspectives, preferences, and viewpoints change, reality is pretty stagnant.
I have looked at all of the largest studies, excluding all that were not carried out by the medical community, that I could find. From the earliest to the latest large-
scale studies that I can find in the medical journals and papers from the medical community, there has not been any significant change in the reality of penis size over the last century or so. Taking all of the data that I could find from the large-
scale studies, a static average, is quite evident over time regarding penis size. From my somewhat rigorous study of mathematics in my lifetime and all of the data I can find regarding penis size, what is often referred to as "optimal" or even desirable is strictly statistically at least 2.5 to 3 deviation points from reality for the vast majority of most human beings. (Hopefully, wide-spread acceptance, practice, and study of Penis Enlargement will change this in the future
)
The results from this study by me of the data available about the reality of human penises regarding size:
Averages population wide (all measurements bone-pressed along top of penis and erections are full naturally or chemically induced)
flaccid length = 9.25cm or 3.64"
flaccid stretched length = 14.75cm or 5.81"
flaccid girth = 10.25cm or 4.03"
erect length = 13.65cm or 5.37"
erect girth = 12.25cm or 4.82"
And no, this data was not skewed by any significant population deviation from one area or another. Perceptions and beliefs aside, there are no significant cultural, regional, or ethnic deviations placing abnormal "
weights" into the averages. These numbers apply to all male human beings on this earth. There are studies for example that show that say people closer to equatorial areas have a slight tendency to have longer relaxed flaccid lengths, generally attributed to both the climate and general skin elasticity over their lifetime, but again, it is not anything outside of normal deviation, and certainly not significant. Everything that people have "heard" about certain "traits" of one people or another is more or less just urban legend and not medically backed or substantiated in any way. Humans are humans. Penises are penises. And the averages above are what they are. Representative of the average male penis, "optimal" or not.
Tom
P.S. LOL...I guess that "optimal" really is just being anything but average.