From
http://www.dict.org:From Webster's Revised Unabridged Dictionary (1913) :
Polygamy \Po*lyg"a*my\, n. [Gr. ?; cf. F. polygamie.]
1. The having of a plurality of wives or husbands at the same time; usually, the marriage of a man to more than one woman, or the practice of having several wives, at the same time; -- opposed to monogamy; as, the nations of the East practiced polygamy. See the Note under Bigamy, and cf. Polyandry.
2. (Zo["o]l.) The state or habit of having more than one
mate.
3. (Bot.) The condition or state of a plant which bears both perfect and unisexual flowers.
This would indicate that polygamy refers to both genders, not just the male.
As to the rest of the points:
StSanta: With more options, the man will turn to whatever woman best satisfies his particular need. The corrresponding need will therefore potentially not be met in the woman. There's loss of reciprocity, which might lead to more dissent and disagreement - something that might lead to a less stability in the marriage.
Miko:
A man may want a woman who is a good housemaker, a smart women who would manage a family, a nymphomaniac, a fertile healthy woman, etc. Abcense of one of those features may cause strain but if a combination of women have them, the need (of the whole family - not just the man) is satisfied and no tensions need arise. Obviously a smart man would not marry two incompatible women. He would be better marrying woman who complement each other, preferably who were friends to start with. In fact adding a new member to the family would be decided by wives as much as the husband - so he is likely to be in minority. Again I am speaking about US or similar country where women are not considered cattle.All good and well for the male. Consider the instance where the man prefers one wife in bed because she's much prettier/better in bed than his others. This need would then not be fulfilled for the others, at least not in an acceptable manner. Consider the man who goes to one woman for comfort: same thing. Consider ALL such needs, and all of a sudden polygamy doesn't sound like that good an idea.
As I said earlier, huge difference in costs. Women with 1/2 a husband has same number of children or more. A husband with 1/2 of a wife has fewer or none children. There is a huge difference in sexes originating from different investment in progeny which determines different behavior. There are many implications on the optimal strategy for each sex. Polygamy is often seen in nature. Polyandry is a rare exception in species very unlike our own - like insects with a single queen. Usually only one male has children by one female at a time. Women with 2 or more husbands also has the same number of children. If reasonable limits are put on the number of husbands a woman can have, she can easily produce one offspring for each during her fertile period. These will then have the financial support of a lot of fathers. The definition of polygamy seems to indicate that the term covers cases both for women and men at the same time, whereas polyandry just for women. If my interpretation of the definition I've posted is correct, that is.
I wrote:
In-family quarrels might increase as well - not all siblings get along or even love each other.
Miko:
In the conditions of abundance, the importance of family ties is lower. But in harsher conditions family and clan is of utmost importance and has been for millenia.In all kinds of situations, family ties can go sour. Hardship is not a guarantee of a family becoming more accepting of each other. Some would indicate the opposite.
I wrote:
if the women of the family agree to share the workload. This might or might not be the case, depending on each individual...
Why would they become a family otehrwise?
Some women tend to childcare while others make big bucks in demanding careers. With more of them natural talents of each can be better exploited without sacrificing child bearing capacity by the smartest and most capable ones. The family means teh agreement to share the workload - that is the difinition of marriage. 'Marriage' doesn't include anything about sharing of workload in its definition. It's been along a lot longer than equality. Marriage can be seen as a legal contract between husband and wife and between the two and society. A legal union between man/men and woman/women.n 1: state of being husband and wife.
A woman can marry for other reasons than being 'part of the family'. You marry a man and a girl, and you marry that person: you do not marry his mother, his father, and his siblings. There's a variety of reasons the woman can marry that are unrelated with an intention to share the workload: love of the man, wanting the best genes for her offspring, financial security, good bed partner, you name it. Unless previously agreed, there's absolutely nothing that includes sharing of workload with others who are married to the man. They might even live apart.
A maid is not the same as a woman raising an adopted child from day one to adulthood. Besides, to the child there will be no emotional difference between the biological mother and the rest of them - that ought to make a difference in women's attitude. I was talking about the calculation of PersonPower per Child there - i.e doing the laundry/making food can be done by a maid: no need for polygamy for that reason.
My assumption that children will receive better care with more women in the house is not because some will not have children but because there will more likely be someone from the family around the house.True, but in PPC shows, the actual human resources each child have available are less in a polygamous family with 1 man and several wives than in a standard monogamous relationship - in the case of 5 wives, about 40% less.
I said:
Less sex, less exclusive time with man, etc etc.
Miko:
Two much time spent together is one of the most common reasons for breakups and family problems. Males and females are different and need their time apart.Too *little* time together, quality one on one time, is also one of the most common reasons for breakups and family problems. While males and females are different in many ways, we do want time with our partner. The male in this case might get his social marital needs satisfied by being around his many wives, each in turn, but the women might not.
[n]
an evolutionary point of view: this is stupid...
Women do not have an evolutionary-minded computer in their heads. Women usually have no problem applying their maternal instincts towards other woman's children.[/b]
Stupid? Women want children for a reason. It's not just their rational part that says "we need to propogate the species. therefore, the rational conclusion is that I need to give birth to 2 children, or someone else need to compensate for me". No, they want it, and there's a reason for it. Call it stupid or not, humans are driven with desires that cannot be attributed to the rational mind alone.
If you'd ask a woman to give up her desire to have a baby of her own so she can take care of the children of others, I bet that in 25-50% of the cases, there'll either be REALLY big resentment and anger from it, or downright refusal. The argument from evolution is just to illustrate where we come from: and we need to know our history to understand the present. Like it or not, we're not totally rational beings.
I wrote:
assuming that each woman gives birth to the same number of children, the population number will be the same even in a polygamous society.
Miko:
But why should he? Having a better husband, bigger family and guaranteed help in childcare she may opt for more if she is so inclined.Well, nwo YOU are using the argument from evolution. I'll counter with your own argument, so at least you'll have to admit one of the two are wrong

. I could do that, or I could continue the argument: Women aren't necessarily interested in getting a huge number of offspring from a good mate: A small number reared properly might be more beneficial in the long run.
I wrote:
might be more than 'slight', depending on the number of women each desireable man has. If a man has 6 women
That number is a bit too much. Of course some man may amass huge harems but in general as more male children are born from healthier (including alcoholism, mental stability etc.) fathers in better environments, they will in turn become more desirable husbands and many women will be likely to chose them in return for being "the only" wife.
So there will be a balance. I would say that average of 1-2 women per man is more reasonable ratio for the long term. That ratio is certainly more acceptable, yet it is not unusal for men in a polygamous relationship to have 4 or 5 wives. And, as you say, since the offspring of these fathers have better genes, they'll be the ones to mate with more. And their descendants in turn. Over time, the gene pool is reduced quite much.
Interesting discussion. I bet, however, if we include a few of the more vocal women, they'd call this 'sexism' since we're talking about letting the man get the goodies of having many wives, potential sex partners, and many to choose from in the marriage to fulfill his particular needs, whereas the woman has to do good with whatever time she can wrestle from the shared man. This is particularly true if she married the man for his good genes alone: He might be a terrible lover, have a bad financial situations (even smart people do make stupid mistakes) or a host of other things.
Open it up for both genders and the situation becomes much more complex, but also much more interesting.
I doubt male jealosy would tolerate too much of that though

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