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Ideas & Trends: The Myth, the Math, the Sex
NY Times ^ | August 12, 2007 | GINA KOLATA

Posted on 08/12/2007 4:17:18 AM PDT by Pharmboy

EVERYONE knows men are promiscuous by nature. It’s part of the genetic strategy that evolved to help men spread their genes far and wide.

Surveys bear this out.

One survey, recently reported by the federal government, concluded that men had a median of seven female sex partners. Women had a median of four male sex partners.

But there is just one problem, mathematicians say. It is logically impossible...those survey results cannot be correct.

It is about time for mathematicians to set the record straight, said David Gale, an emeritus professor of mathematics at the University of California, Berkeley.

...is not and cannot be true for purely logical reasons,” Dr. Gale said.

He even provided a proof:

“By way of dramatization, we change the context slightly and will prove what will be called the High School Prom Theorem. We suppose that on the day after the prom, each girl is asked to give the number of boys she danced with. These numbers are then added up giving a number G. The same information is then obtained from the boys, giving a number B.

Theorem: G=B

Proof: Both G and B are equal to C, the number of couples who danced together at the prom. Q.E.D.”

“This is what is reported,” Ms. Fryar said. “The reason why they report it I do not know.”

Dr. Gale said...Something like a prostitute effect, he said, “would be negligible.” The most likely explanation, by far, is that the numbers cannot be trusted.

Ronald Graham, a professor of mathematics and computer science at the University of California, San Diego, agreed ...raising the question of where all those extra partners might be.

“Some might be imaginary,” Dr. Graham said. “Maybe two are in the man’s mind and one really exists.”

(Excerpt) Read more at nytimes.com ...


TOPICS: Culture/Society; Extended News; News/Current Events
KEYWORDS: mathematics; ohthosemen; sexsurveys
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But hold on there just a minute, you math brainiacs. Riddle me this: what if one out of five women were very promiscuous...why wouldn't they up the total number of sexual contacts for the males who find them? All it would take would be for these (relatively) few promiscuous women to under-report THEIR contacts and the men are now telling the truth.
1 posted on 08/12/2007 4:17:20 AM PDT by Pharmboy
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To: Lazamataz; pissant; blam; SunkenCiv; neverdem; Coleus; wagglebee; The Spirit Of Allegiance; ...

You guys tell the truth, dontcha??


2 posted on 08/12/2007 4:19:52 AM PDT by Pharmboy ("Liberals love humanity but hate people" Dick Armey)
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To: Pharmboy
One survey, recently reported by the federal government, concluded that men had a median of seven female sex partners.
It's a good thing they didn't just ask sailors. It would've totally skewed the data.
3 posted on 08/12/2007 4:22:51 AM PDT by philman_36
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To: philman_36
...men had a median of seven female sex partners.

Whole lotta you guys ain't gettin' any.

4 posted on 08/12/2007 4:28:18 AM PDT by MARTIAL MONK
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To: Pharmboy

EVERYONE knows men are promiscuous by nature. It’s part of the genetic strategy that evolved to help men spread their genes far and wide.
-
really? so how come the men and women who are actually having kids are monogamous?


5 posted on 08/12/2007 4:35:14 AM PDT by ari-freedom (I am for a strong national defense, free markets and traditional moral values.)
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To: philman_36

Actually, one explanation reported in the article for mismatch between men and women relates to your comment about sailors, to wit, that men who go to prostitutes or see women outside of this country skew the data since those two groups of women are transparent to the survey. However, the math brains say no way is that an explanantion since the effect would be negligible.


6 posted on 08/12/2007 4:38:21 AM PDT by Pharmboy ("Liberals love humanity but hate people" Dick Armey)
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To: MARTIAL MONK
Wow...those scientists ought to come to this country...7 would be a median per week...this place is Sodom and Gomorrah.
7 posted on 08/12/2007 4:39:17 AM PDT by IDF_Fighter (IDF Homefront Command - Search, Rescue and Civil Defense - "Saving Lives Without Borders")
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To: ari-freedom

There certainly are significant numbers of monagamous men as there are significant numbers of multi-partner as well as married and cheatin’ men.


8 posted on 08/12/2007 4:39:51 AM PDT by Pharmboy ("Liberals love humanity but hate people" Dick Armey)
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To: Pharmboy

Well, if the respondents are lying, then that’s the point the article makes.

The math is better explained this way:

Total number of men X “dances” per man = Total number of women X “dances per woman.

Since it takes two to tango, the number of dances is the same.

An example. Three men and two women. Each man dances twice with each woman.

3X2=6 for the men; 2X3=6 for the women.

The number of dances will remain the same - using the median figure.

So if the men report 4 dances each and the women 2.. somebody is lying.

Their are various other factors like partners outside the country... that are mentioned in the article and thread.


9 posted on 08/12/2007 5:28:27 AM PDT by D-fendr
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To: Pharmboy

The truth? I think some guys probably exaggerate, but I know that women definitely minimize. On the extreme, I once dated a girl who said (with a straight face) that she considered herself a vigin again if she went a year without sex. I also think girls compartmentalize one night stands (ONS)—some may not count sex unless it is part of a real relationship. I know one girl who “couldn’t recall” our ONS when I ran into her years later, even though I know it took place. It of it too may also be the definition of sex. Guys may consider oral sex to be sex, but women might not. This also gets into the exaggeration part if the question specifically covers intercourse.


10 posted on 08/12/2007 5:42:04 AM PDT by rbg81 (DRAIN THE SWAMP!!)
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To: Pharmboy

It’s obvious why Prof. Gale ain’t gettin any.


11 posted on 08/12/2007 5:45:00 AM PDT by shove_it (nonilligitimus carborundum)
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To: Pharmboy

Times reporter doesn’t know the difference between a mathematical median and an average.


12 posted on 08/12/2007 6:03:09 AM PDT by joshhiggins (O you who believe! do not take the MUSLIMS for friends)
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To: Pharmboy
on the day after the prom, each girl is asked to give the number of boys she danced with. These numbers are then added up giving a number G. The same information is then obtained from the boys, giving a number B.
Theorem: G=B

Proof: Both G and B are equal to C, the number of couples who danced together at the prom. Q.E.D.”

That is correct. But the article does not refer to particular men and women but to statistics about men and about women. If the assertion were that the average per man was greater than the average per woman, the proof above would invalidate the data, because the average number of dances per man is just the total number of dancing couples divided by the number of men, likewise for women, and we implicitly assume that the number of men approximately equals the number of women.

However, if the number of women were double the number of men, the average woman would have half the number of partners at the dance as the average man did. This would cover the case of sailors for whose universe the number of women is greater than the number of men.

And the use of the median to characterize each group completely invalidates the comparison, since if (as you point out) one woman danced with all the men, and if all the men danced only with a single woman other than that "promiscuous" woman, the median woman would (number of women exceeding 2) dance with one man, while the median man would (number of men exceeding 2) dance with two women.

IMHO these mathematicians need to check their "logic."


13 posted on 08/12/2007 6:30:43 AM PDT by conservatism_IS_compassion (The idea around which liberalism coheres is that NOTHING actually matters except PR.)
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To: philman_36
The operative word here is median. This is the number in the middle. Half the men had encounters equal to or greater than the median and half the men had encounters equal to or less than the median. So, three men, Joe, John, and Jim are surveyed. Joe has six encounters, John has seven encounters and Jim has eight encounters. The median is seven encounters. Thats a total of twenty-one encounters. Meanwhile, three women, Mary, Martha, and Mira are surveyed. Mary has zero encounters, Martha has four encounters but Mira has seventeen encounters. Thats a total of twenty-one encounters and the median number of encounters is four.
The average number of encounters by women and men are equal at seven each but the median encounters are different. Seven for men and four for women.
There is no way to prove the median numbers either right or wrong, without looking at the data. The averages should be about equal, but the medians can be anywhere.
14 posted on 08/12/2007 6:41:14 AM PDT by SWEET OLD BILL
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To: philman_36
The operative word here is median. This is the number in the middle. Half the men had encounters equal to or greater than the median and half the men had encounters equal to or less than the median. So, three men, Joe, John, and Jim are surveyed. Joe has six encounters, John has seven encounters and Jim has eight encounters. The median is seven encounters. Thats a total of twenty-one encounters. Meanwhile, three women, Mary, Martha, and Mira are surveyed. Mary has zero encounters, Martha has four encounters but Mira has seventeen encounters. Thats a total of twenty-one encounters and the median number of encounters is four.
The average number of encounters by women and men are equal at seven each but the median encounters are different. Seven for men and four for women.
There is no way to prove the median numbers either right or wrong, without looking at the data. The averages should be about equal, but the medians can be anywhere.
15 posted on 08/12/2007 6:41:23 AM PDT by SWEET OLD BILL
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To: Pharmboy

It just means that the underlying distribution of partners is quite different between men and women, hence the diffences between the two central tendencies (mean and median).


16 posted on 08/12/2007 7:10:37 AM PDT by keta
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To: Pharmboy
...that men who go to prostitutes or see women outside of this country...
The outside the country part is true but I'd argue the going to prostitutes part.
As if there were no "West-Pac widows" or women who simply love men in uniform.
17 posted on 08/12/2007 7:20:06 AM PDT by philman_36
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To: MARTIAL MONK
Whole lotta you guys ain't gettin' any.
While I may not be the best dancer on the floor any longer I've been to enough barn dances to last a lifetime.
18 posted on 08/12/2007 7:22:37 AM PDT by philman_36
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To: SWEET OLD BILL
The operative word here is median.
No kidding? If you hadn't told me that I would've never known.

A whole bunch of people missing my humor this morning...

19 posted on 08/12/2007 7:25:17 AM PDT by philman_36
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To: Pharmboy

You know it’s a slow news week when a post with the word “sex” in the title only gets 20 responses.


20 posted on 08/12/2007 7:59:52 AM PDT by Albion Wilde ( America: “...the most benign hegemon in history.” —Mark Steyn)
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To: rbg81
I think some guys probably exaggerate, but I know that women definitely minimize.

Young, attractive women lie big time, even to themselves. The honest ones will admit to dozens of ONS encounters - they have unlimited opportunity, and a boundless ability to rationalize the acts. They simply don't think those encounters count as anything serious.

21 posted on 08/12/2007 8:04:07 AM PDT by Mr. Jeeves ("Wise men don't need to debate; men who need to debate are not wise." -- Tao Te Ching)
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To: Albion Wilde
You know it’s a slow news week when a post with the word “sex” in the title only gets 20 responses.

Some people talks about it and some people does it.

22 posted on 08/12/2007 8:04:33 AM PDT by MARTIAL MONK
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To: IDF_Fighter

You wrote:

“Wow...those scientists ought to come to this country...7 would be a median per week...this place is Sodom and Gomorrah.”

Well, with an endorsement like that and the picture in your profile, those scientists might think that’s the best offer they’ve ever had!

Yes, I actually mean that as a compliment. Please don’t shoot me!


23 posted on 08/12/2007 8:04:51 AM PDT by vladimir998 (Ignorance of Scripture is ignorance of Christ. St. Jerome)
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To: Pharmboy

“Some might be imaginary,” Dr. Graham said. “Maybe two are in the man’s mind and one really exists.”

Or, maybe the women are not counting the one time encounters when they were drunk, out of state on spring break, etc.


24 posted on 08/12/2007 8:06:17 AM PDT by ItisaReligionofPeace
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To: IDF_Fighter

That’s a bit depressing! Shalom.


25 posted on 08/12/2007 8:08:19 AM PDT by ItisaReligionofPeace
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To: Pharmboy
MARTY:

<-- (couple o'near misses)


26 posted on 08/12/2007 8:46:15 AM PDT by martin_fierro (< |:)~)
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To: Mr. Jeeves

I’ve been with a range of women, from those whose face I’d like to put on a t-shirt, to those I’d deny the I’d ever met. The good looking women tend to be more choosey (at least where I was concerned). It seems (to me) like the not so good looking ones are the ones with the most partners because they are less discriminating. In fact, I had a number of “5’s” tell me that they’re more apt to have sex because they often don’t know when the next one is coming from (kinda like guys in that way). Another observation is that a lot of women cheat on their boyfriends—even devotion + an engagement ring is not a deterrent.

One thing for sure: men and women deserve each other.


27 posted on 08/12/2007 9:08:53 AM PDT by rbg81 (DRAIN THE SWAMP!!)
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To: Pharmboy
Chains of Affection: The Structure of Adolescent Romantic and Sexual Networks
PDF FILE: http://www.soc.washington.edu/users/stovel/Chains.pdf

Peter S. Bearman*
Institute for Social and Economic Research and Policy
Columbia University

James Moody
Department of Sociology
Ohio State University

Katherine Stovel
Department of Sociology
University of Washington

RESEARCHERS MAP THE SEXUAL NETWORK OF AN ENTIRE HIGH SCHOOL
http://researchnews.osu.edu/archive/chains.htm

Map: High School Hookups
http://discovermagazine.com/2007/jul/map-high-school-hookups/article_print

A Snapshot of Teen Sex
http://www.time.com/time/printout/0,8816,1022618,00.html


28 posted on 08/12/2007 9:16:08 AM PDT by KayEyeDoubleDee (const Tag &referenceToConstTag)
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To: IDF_Fighter
7 would be a median per week...this place is Sodom and Gomorrah.

Are you serious, or are you just joking (I assume your statement is about Israel)?

29 posted on 08/12/2007 9:21:11 AM PDT by nwrep
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To: rbg81
The flaw in Dr. Gale’s analysis is the implicit assumption that everyone dances each dance (no one sits out and the women aren't promiscuous).

Consider the simple proposition that 100 men and 100 women attend the dance and that 90 women dance with only one partner (keep it clean, folks!) and that the 10 prettiest girls each have one dance with each of the 100 males. Assume further that there are 1,000 dances between the monogamous pairings and 1,000 dances between the ten comely women and each of the 100 men (another 1,000 dances).

The result would be for each male to dance 1,010 times and having a total of 11 partners and each female dancing 1,000 times with 90 of them having one partner and 10 of them having 100 partners.

Thus, the average (all, in this case) male would have had 11 partners and the average female 10.1 — but 100% of the males would have had 11 partners and 90% of the women would have had only one (and 10% of the women would have had 100 partners)!!! 90 of the women would dance half the time (no doubt sitting out because of a “headache”). Each of the males would dance 1010 times (about half the time, too — no doubt recovering their energies).

B=G? I think not!

30 posted on 08/12/2007 9:44:04 AM PDT by Norman Rogers (Missed Analysis)
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To: conservatism_IS_compassion

Thanks...good info.


31 posted on 08/12/2007 9:45:46 AM PDT by Pharmboy ("Liberals love humanity but hate people" Dick Armey)
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To: ari-freedom
really? so how come the men and women who are actually having kids are monogamous?

You're kidding, right? Only limp-wristed men are monagamous.

32 posted on 08/12/2007 9:49:16 AM PDT by Go Gordon (The short fortune teller who escaped from prison was a small medium at large.)
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To: martin_fierro

LOL!! I knew I could “count” on you...


33 posted on 08/12/2007 9:49:40 AM PDT by Pharmboy ("Liberals love humanity but hate people" Dick Armey)
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To: D-fendr
So if the men report 4 dances each and the women 2.. somebody is lying.

Not if the guys don't dance to each song. Same with sex.

34 posted on 08/12/2007 9:51:28 AM PDT by Go Gordon (The short fortune teller who escaped from prison was a small medium at large.)
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To: Go Gordon

I don’t understand..

Doesn’t matter whether they dance to each song, just how many each reports.


35 posted on 08/12/2007 10:06:37 AM PDT by D-fendr
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To: D-fendr
I don’t understand.. Doesn’t matter whether they dance to each song, just how many each reports.

Okay, lets say you have 4 guys and 4 gals at a dance. On dance #1, Guy 1 dances with Gal 1. The other guys don't bother asking the other gals. Dance #2, Guy 1 dances with gal 2. Again, guys 2,3,4 go out for a smoke and don't dance. Dance #3, guy 1 asks gal 3 to dance. Guys 2,3,4 go out for a shot of whiskey, and don't dance. Dance #4, guy 1 asks gal 4 to dance. Guys 2,3,4 go outside to smoke a bone.

Scorecard: The guy had 4 gals. Each gal had 1 guy. get it now?

36 posted on 08/12/2007 10:11:24 AM PDT by Go Gordon (The short fortune teller who escaped from prison was a small medium at large.)
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To: Norman Rogers

Seems like the 10 prettiest girls would be darn well worn out by the time the dance was over.


37 posted on 08/12/2007 10:38:03 AM PDT by rbg81 (DRAIN THE SWAMP!!)
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To: Go Gordon

But the total is the same.

1 guy times four dances = 4

Four girls times one dance = 4


38 posted on 08/12/2007 10:45:03 AM PDT by D-fendr
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To: Go Gordon
Ahh.. Different partners.. I was thinking total, um, dances. But they're talking about dances with unique partners. I get it now.
39 posted on 08/12/2007 10:55:17 AM PDT by D-fendr
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To: nwrep

Serious...unfortunately...

Tel Aviv is the one night stand and meaningless sex capital of the world.

Just try and find someone who wants a serious relationship in this country...except the ultra-orthodox.

We’re talking, 18 yr old kids have more than passed that 7 partner mark, and many doubled it, or more.


40 posted on 08/12/2007 10:57:09 AM PDT by IDF_Fighter (IDF Homefront Command - Search, Rescue and Civil Defense - "Saving Lives Without Borders")
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To: 2ndMostConservativeBrdMember; afraidfortherepublic; Alas; al_c; american colleen; annalex; ...

.


41 posted on 08/12/2007 11:56:30 AM PDT by Coleus (Pro Deo et Patria)
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To: MARTIAL MONK
"You know it’s a slow news week when a post with the word 'sex' in the title only gets 20 responses."

Some people talks about it and some people does it.


ROFLMBO!

42 posted on 08/12/2007 12:04:28 PM PDT by Albion Wilde ( America: “...the most benign hegemon in history.” —Mark Steyn)
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To: ari-freedom
so how come the men and women who are actually having kids are monogamous?

What is the name of the alternate universe you inhabit?

43 posted on 08/12/2007 12:05:10 PM PDT by HIDEK6
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To: IDF_Fighter; nwrep

Whenever a society is under threat of war or actually involved in a war promiscuous sex is common. During the American Revolution, sex was easy.


44 posted on 08/12/2007 2:37:32 PM PDT by Pharmboy ("Liberals love humanity but hate people" Dick Armey)
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To: Pharmboy; ari-freedom; conservatism_IS_compassion; Liz; DaveLoneRanger; snugs; trussell; cgk; ...

I’m not even a promiscuous blip on that study’s radar, so to speak. I am the abstinent eternally-chivalrous optimist, looking for Miss Right and I am going to make a wife of her one of these days.

Meanwhile, there are no divorces, no one night stands, no clinics, no AIDS, no child support, no baggage, no complex visitation relationships, no pregnancies, no abortions in my past—by the grace of God.

Ari—great point about the monogamous relationships being the ones propagating!

As regards the survey’s main question, my observation is that *typically*, the more guys brag about their exploits—the less exploits they have. Yeah, talk about Darwinian chest-beating all you want. In reality, it’s projection and self-promotion that would be unnecessary in the context of the authentic relationships women crave.

Most girls, at least those who are older than Britney and Lindsay, DO NOT want reputations as “easy,” with a few ribald exceptions. Women thrive on commitment, security and being cherished for a lifetime, not being conquered after dinner-and-a-movie.

There’s your romance.


45 posted on 08/12/2007 3:35:23 PM PDT by The Spirit Of Allegiance (Public Employees: Honor Your Oaths! Defend the Constitution from Enemies--Foreign and Domestic!)
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To: IDF_Fighter

Ping to 45 FYI.


46 posted on 08/12/2007 3:48:27 PM PDT by The Spirit Of Allegiance (Public Employees: Honor Your Oaths! Defend the Constitution from Enemies--Foreign and Domestic!)
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To: Go Gordon

Those with multiple sex partners are not getting kids out of those ‘relationships.’ They use birth control or abort. Or the woman who has the kid is dumped, becomes a single mom and doesn’t have any more kids.


47 posted on 08/12/2007 4:03:29 PM PDT by ari-freedom (I am for a strong national defense, free markets and traditional moral values.)
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To: Pharmboy

The answer is that women lie and men don’t need to. There is enough sex going on that men can report honestly without feeling like they haven’t had enough partners, and women have had more partners than they will report.


48 posted on 08/12/2007 4:07:28 PM PDT by krb (If you're not outraged, people probably like having you around.)
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To: The Spirit Of Allegiance

Great post! I wish you weren’t too old for my daughters!


49 posted on 08/12/2007 4:16:18 PM PDT by Tax-chick (All the main characters die, and then the Prince of Norway delivers the Epilogue.)
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To: The Spirit Of Allegiance

thanks for also pointing out that promiscuity leads to all these diseases that wipe out the population. Not exactly the best way to spread genes


50 posted on 08/12/2007 4:18:32 PM PDT by ari-freedom (I am for a strong national defense, free markets and traditional moral values.)
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