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Abstract
Background
Marital dissolution is ubiquitous in western societies. It poses major scientific and sociological problems both in theoretical and therapeutic terms. Scholars and therapists agree on the existence of a sort of second law of thermodynamics for sentimental relationships. Effort is required to sustain them. Love is not enough.
Methodology/Principal Findings
Building on a simple version of the second law we use optimal control theory as a novel approach to model sentimental dynamics. Our analysis is consistent with sociological data. We show that, when both partners have similar emotional attributes, there is an optimal effort policy yielding a durable happy union. This policy is prey to structural destabilization resulting from a combination of two factors: there is an effort gap because the optimal policy always entails discomfort and there is a tendency to lower effort to non-sustaining levels due to the instability of the dynamics.
Conclusions/Significance
These mathematical facts implied by the model unveil an underlying mechanism that may explain couple disruption in real scenarios. Within this framework the apparent paradox that a union consistently planned to last forever will probably break up is explained as a mechanistic consequence of the second law.
The model produces a plausible scenario, through a sequence of effort inattentions, for the deterioration of a relationship in a gradual form, which seems to be typical according to data. Because of the effort gap, there is a tendency to lower the right effort level. Then the intrinsic instability of sentimental dynamics obeying the second law causes the piecewise decaying trajectories to move further and further away from the target trajectory and eventually to cross the threshold level xmin. This is considered a point of pre-rupture, since it is a matter of time before effort is abandoned.
Closing remarks
The mathematical theory introduced in this paper unveils an underlying mechanism that may explain the deterioration and disruption occurring massively in sentimental relationships that were initially planned to last forever. Two forces work together to ease the appearance of the deterioration process. First, it happens that since an extra effort must always be put in to sustain a relationship on the successful path, partners may relax and lower the effort level if the gap is uncomfortable. Then instability enters the scene, driving the feeling-effort state out of the lasting successful dynamics.
A further significant finding is the fact that partners construct and perceive their relationships as definitive projects is compatible with the evidence that their union may probably fall apart –which is typical in the model dynamics. This dismantles the failure paradox, accounting for probable couple disruption as a gravitational consequence of the second law under optimality.
The model analysis may offer advice to partners about how to keep a long term relationship afloat. Lasting relationships are possible only if the effort gap is tolerable and the optimal effort making is continuously watched over to stay on the target dynamics. A realistic lasting relationship, when the effort gap is satisfactory, may be described by a trajectory travelling near the stable branch for a while and then wandering near equilibrium alert at keeping effort at the right level. These kinds of relationships are seen often enough although they may appear exceptional. This is consistent with the exceptionality of durable successful relationships within the model.
Two apparent facts serve as a first test to validate the theory proposed in this paper: (i) the model formulation builds on accepted evidence (namely, the second law and the intention of couples to design their relationships to last forever) and (ii) the mathematics of the model shows consistency with further empirical facts on divorce and separation, namely the typical progressive deterioration of failing relationships (which is claim #3 in section 2) and the decrease of well-being after marriage (claim #4 in section 2). Further research to validate the model should address testing –in a lab experiment or a field survey– the two main findings of the theory, i.e. the existence of the effort gap and the unstable nature of feeling-effort dynamics.
The pessimistic conclusions for couple durability should remain valid in a less ideal scenario as long as the formulation of the second law is considered valid. More realistic assumptions like (weak) heterogamy, presence of external shocks or sub-optimal behaviour, probably enter the scene as contributing factors enforcing instability. The effort gap plus the unveiled instability identify an essential intrinsic mechanism for probable sentimental failure.
Originally posted by lagenese
Well, in my book, science is unable to explain "love" or relationships.
Originally posted by MemoryShock
Social dynamics being given graphical and by virtue of percieved proprietary maths validation for lack of any other relevant data.
These guys are fired until they can mathematically define neuronal evolution and explain it in laymens terms...
Martin and Bumpass [13] used 1985 data to show that, within a span of 40 years, two out of three marriages in the US will end in separation or divorce.
This is what it comes down to...and I think it can even be further simplified to just "Nothing lasts forever."...even though a lot of us like to think otherwise, it's completely illogical that anything should last for an infinite amount of time, except for reality/time it's self. No love will last forever. Even if there happens to be an infinite super-conscious mind (God) that holds reality together...at some point, that God is going to destroy it's self and everything it holds together, however, it theoretically could last forever...it just wouldn't, and to explain why I think this, we really need to think on a large scale.
Within this framework the apparent paradox that a union consistently planned to last forever will probably break up is explained as a mechanistic consequence of the second law.
Originally posted by schrodingers dog
They haz graphs:
In conclusion ... this is what happens when mathematicians and statisticians try to figure out why their marriage failed.
Anyone can make sense of it?
Is this true?
Originally posted by lagenese
Well, in my book, science is unable to explain "love" or relationships. They can do all the research they want, the will never come up with plausible conclusions for love is a vibrational status that cannot be measured or explained by scientific means.
Interesting post by the way, and well presented. Thanks!
Originally posted by schrodingers dog
Originally posted by lagenese
Well, in my book, science is unable to explain "love" or relationships.
Agreed ... though I can't shake the image in my head of some guy showing this paper to his soon to be ex-wife as to why their marriage failed. "Honey honey, look at the graph ... that's where we are!" I presume a good whipping would shortly follow her initial confusion.
I just find their stated "love is not enough" premise as surreal in scientific terms.
Originally posted by prevenge
we can all has love forever... somedayz...
Originally posted by bigfatfurrytexan
I promise you that the PTB know all of this already, and apply this understanding towards how they act/react in the public eye. It is the essence of mind control on a group level.
Originally posted by schrodingers dog
although trying to quantify and mathematically understand/predict interpersonal behavior between two people is theoretically possible, it is probably much more complex that the content of this paper and is likely to include variables that we as humans are not even cognizant of.
Originally posted by schrodingers dog
Originally posted by bigfatfurrytexan
I promise you that the PTB know all of this already, and apply this understanding towards how they act/react in the public eye. It is the essence of mind control on a group level.
I suspect that is correct ... government, corporate, wall street, marketing organizations must have formulaic/statistical probability predictors for human behavior. However I would assume that their margin of error would increase inversely proportionally to the size of the group ... that is to say the smaller the group the less applicable the formula. And that's where I think the achievement of this paper falls short of its stated ambition ... although trying to quantify and mathematically understand/predict interpersonal behavior between two people is theoretically possible, it is probably much more complex that the content of this paper and is likely to include variables that we as humans are not even cognizant of.
[edit on 21 Apr 2010 by schrodingers dog]