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They came to some unexpected results: the shape of the human skull has changed considerably in the six or seven hundred years between the modern and medieval samples. It would appear that our skulls, and most likely our brains, are getting selectively bigger.
Two sets of older skulls, thirty from London plague victims of the mid-14th century and another fifty-two from the wreck of the Mary Rose in 1545, were measured in several different dimensions, including the height of the cranial vault (the measurement from eye to top of head). The old skulls had an average height for the cranial vault of 80mm. These were compared with a set of modern skulls (measurements taken from dental records). The average cranial vault height for the modern skulls? 95mm—a more than 18% increase.
What exactly the increase in size means is something else again. The first impulse is to attribute it to an increase in intelligence. Certainly Dr. Peter Rock, who led the study, suggests that the increase in size may reflect an increase in mental capacity, but this seems a little premature. Firstly, it falls to a common misconception that brain size directly relates to mental capacity. This has been proven false a number of times. In general across species, mental capacity relates to the brain size relative to body size, not brain size absolute. Within species the given brain size of an individual seems to have no predictable effect on intelligence, with the exception of specific brain diseases that can lead to abnormally large or small brains. Given that the average human has increased in size and height over the centuries, the measured increase may simply be reflective of this larger change, or it may reflect the very different nutritional status of the modern, first-world human, as compared to most of the rest of humanity throughout history.
Originally posted by Greensboro1978
I think the answer to all these mysteries is in one of the largest monuments on earth. The Great Pyramid.edit on 10-11-2011 by Greensboro1978 because: edit text
Originally posted by RP2SticksOfDynamite
If this theory is true and time travel is already a fact of the future then is it not possible that the technology may have already been introduced to the past for some reason or another!