Regular expressions of marriage

marriage?,
originally uploaded by Rootytootoot.

Opponents of gay marriage favor the definition of marriage as between one man and one woman, forming the basis of a traditional family. Using the language of regular expressions, we can formalize the allowed configurations of families under different assumptions.

Let us represent a family grouping by a character string including various numbers of children, men, and women in that order (alphabetical).

Extended monogamy

^(child)*(man(man|woman)?|woman(woman)?)$

Traditional monogamy

^(child)*(man(woman)?|woman)$

Childfree

^(man(man|woman)?|woman(woman)?)$

Polygyny

^(child)*(man(woman)*)$

Polyandry

^(child)*((man)*woman)$

Polygamy

^(child)*((man)+(woman)*|(man)*(woman)+)$

Anti-spinster

^(child)*(man(woman)?)$

Anti-bachelor

^(child)*((man)?woman)$

Nuclear family

^(man|woman|(child)*manwoman)$

I wrote a little Ruby program to test a number of configurations against these regular expressions to give you an idea of what is allowed and what is not under those models.

Family grouping	Allowed?
Anti-spinster (hetero, no single women, single fathers okay)
man	true
woman	false
manwoman	true
manman	false
womanwoman	false
manmanwoman	false
childman	true
childwoman	false
childmanwoman	true
childwomanwoman	false
childchildmanman	false
childmanmanman	false
manmanwoman	false
child	false
Childfree (extended monogamy without children)
man	true
woman	true
manwoman	true
manman	true
womanwoman	true
manmanwoman	false
childman	false
childwoman	false
childmanwoman	false
childwomanwoman	false
childchildmanman	false
childmanmanman	false
manmanwoman	false
child	false
Open family (any configuration allowed)
man	true
woman	true
manwoman	true
manman	true
womanwoman	true
manmanwoman	true
childman	true
childwoman	true
childmanwoman	true
childwomanwoman	true
childchildmanman	true
childmanmanman	true
manmanwoman	true
child	true
Nuclear family (hetero, no single parents)
man	true
woman	true
manwoman	true
manman	false
womanwoman	false
manmanwoman	false
childman	false
childwoman	false
childmanwoman	true
childwomanwoman	false
childchildmanman	false
childmanmanman	false
manmanwoman	false
child	false
Anti-bachelor (hetero, no single men, single mothers okay)
man	false
woman	true
manwoman	true
manman	false
womanwoman	false
manmanwoman	false
childman	false
childwoman	true
childmanwoman	true
childwomanwoman	false
childchildmanman	false
childmanmanman	false
manmanwoman	false
child	false
Polygyny (1 man + n women)
man	true
woman	false
manwoman	true
manman	false
womanwoman	false
manmanwoman	false
childman	true
childwoman	false
childmanwoman	true
childwomanwoman	false
childchildmanman	false
childmanmanman	false
manmanwoman	false
child	false
Traditional monogamy (1+1 of opposite sexes, single parents okay)
man	true
woman	true
manwoman	true
manman	false
womanwoman	false
manmanwoman	false
childman	true
childwoman	true
childmanwoman	true
childwomanwoman	false
childchildmanman	false
childmanmanman	false
manmanwoman	false
child	false
Polyandry (n men + 1 woman)
man	false
woman	true
manwoman	true
manman	false
womanwoman	false
manmanwoman	true
childman	false
childwoman	true
childmanwoman	true
childwomanwoman	false
childchildmanman	false
childmanmanman	false
manmanwoman	true
child	false
Extended monogamy (1+1 of either sex, single parents okay)
man	true
woman	true
manwoman	true
manman	true
womanwoman	true
manmanwoman	false
childman	true
childwoman	true
childmanwoman	true
childwomanwoman	true
childchildmanman	true
childmanmanman	false
manmanwoman	false
child	false
Polygamy (n men + n women)
man	true
woman	true
manwoman	true
manman	true
womanwoman	true
manmanwoman	true
childman	true
childwoman	true
childmanwoman	true
childwomanwoman	true
childchildmanman	true
childmanmanman	true
manmanwoman	true
child	false

A few minutes' inspection of the results reveals how the regular expression in this model encodes the assumptions as to who is allowed to mate and who is allowed to raise children in a powerful and concise manner. Specifically, each of the regexs is short enough to fit on the front of a T-shirt, with room to spare, so that no geekish onlooker would need to wonder what your family philosophy consisted of.