Dear ibjulie-ga;
Thank you for allowing me an opportunity to answer your interesting
question. The answer is YES...um, and NO.
You are correct. If old grandpa (many times over) hadn?t gotten frisky
that day that it rained back in 1681 and at that very moment cause
your grandmother (many times over) to conceive your next closer direct
ancestor, YOU would not be here. Amazing isn?t it?
Your figure might be a bit high but you?re on the right track (that?s
a ?quadrillion?, by the way, not a ?zillion?). At this point one?s
Family Tree becomes a FAMILY FOREST, doesn?t it? Hey, what a clever
name! Someone would make use of it.
Oops. Too late. Someone already has?
FAMILY FOREST
http://www.familyforest.com/resources.html
Wait! How can this be? There weren?t a quadrillion living people in
the ENTIRE WORLD 50 generations ago?or EVER for that matter!
That?s right. Some of your ancestors are counted twice, ten times or
even hundreds of times because over the years all of our generational
and ancestral lines cross and re-cross many times. I think this
article will give you a better understanding:
[excerpt]
We all are blessed with two parents, four grandparents, eight great
grandparents and so on. If the average generation is twenty-five
years, in 1200 years (back to 800 AD, the time of Charlemagne) each
person has 281.5 trillion grandparents. That's the way geometric
progressions work. The number of grandparents doubles every 25 years
and in 12OO years or 48 generations, 281.5 trillion names would be on
your pedigree.
GENEALOGY PEDIGREE COLLAPSE
http://www.generations.on.ca/genealogy/pedigree.htm
This one also sheds some significant light on the subject:
50 generations = 2 quadrillion+ ancestors
40 generations = 2 trillion+ ancestors
30 generations = 2 billion+ ancestors
20 generations = 2,097,150 ancestors
10 generations = 2,046 ancestors
8 generations = 510 ancestors
7 generations = 254 ancestors
6 generations = 126 ancestors
5 generations = 62 ancestors
4 generations = 30 ancestors
3 generations = 14 ancestors = your 8 great grandparents, plus 6 from below
2 generations = 6 ancestors = your parents plus both sets of grandparents
1 generations = 2 ancestors = your parents
THE ODDS OF BEING RELATED
http://www.electroauthor.com/marcotte_genealogy/math.htm
Here?s the math (not that I understand it). Others have expressed an
interest in this issue besides you so some brainiac has apparently
already figured it out. The trick is to figure out what he?s talking
about. You seem to be something of a mathematician so you will
undoubtedly have better luck with it than I am willing to attempt:
A SIMPLE WAY TO COUNT PARENTAL LINEAGE
http://home.gwi.net/antiques/mingus/howmany.html
So...
"Is the generational number of ancestors really mathematically this high?"
Theoretically, YES
"Do you REALLY have a "zillion" genetic direct ancestors?"
NO, and no mathematical model that I know of can tell you how many you
really do have on calculations alone but suffice it to say that it is
far, far less than the quadrillion plus ancestors that most models
compute and produce.
See if you can make sense of the math and work it out yourself. Do
yourself a favor - Try not to dwell on it too much, oh, and have some
aspirin handy.
Below you will find that I have carefully defined my search strategy
for you in the event that you need to search for more information. By
following the same type of searches that I did you may be able to
enhance the research I have provided even further. I hope you find
that my research exceeds your expectations. If you have any questions
about my research please post a clarification request prior to rating
the answer. Otherwise, I welcome your rating and your final comments
and I look forward to working with you again in the near future. Thank
you for bringing your question to us.
Best regards;
Tutuzdad ? Google Answers Researcher
OTHER INFORMATION SOURCES
KINGS, KIN AND SCOUDRELS
http://www.tbgen.com/trammell/tra10.html
ONE HUNDRED INTERESTING MATHEMATICAL PROBLEMS, PUZZLES, DIVERSIONS,
AND AMUSEMENTS: NUMBER 21: ANCESTORS
http://www.j-bradford-delong.net/movable_type/2003_archives/002852.html
SEARCH STRATEGY
SEARCH ENGINES USED:
Google ://www.google.com
SEARCH TERMS USED:
"NUMBER OF GRANDPARENTS" GENERATIONS
GRANDPARENTS CALCULATE GENERATIONS
NUMBER OF PARENTAL RELATIONS
CALCULATE "HOW MANY ANCESTORS" |