beatrice_otter: Saavik and Spock (Saavik and Spock)
So, I have a question about Vulcan biology.

I have long been puzzled by the inherent illogic of a heat that can kill you.  Heats are supposed to grow the species, not reduce it.

But the thing is, terrestrial animals that have a heat, usually it's one heat cycle per year or so.  Because that gives you time for the babies to be born and grow a little bit before winter sets in and obviously you don't want to be pregnant during winter scarcity, and then by the time a year has gone by the babies are old enough/mature enough that they don't need Mama and another heat cycle begins in the spring.

Vulcan heats are seven years apart.

My first thought, as I began contemplating this, was ... how long are Vulcan pregnancies?!?  Because Vulcan children seem to grow at about the same rate as Human children (7 year old Spock in the animated series episode Yesteryear looked and acted about like one would expect a 7 year old to, and there was never any hint that he was developmentally advanced or delayed for a Vulcan), and so if you think time between heats=pregnancy+time for baby to no longer be an infant, well, you start to wonder if Vulcan pregnancies are like three years long or something.

But then I realized that I was overlooking part of the nature of a terrestrial heat cycle.  Part of it is also to time things such that no one is pregnant during winter, the time when resources are scarcest.

Which leads me to wonder: does the planet have a year that is seven Earth-years long?  It seems like that would be pretty far from Vulcan's sun--Mars has a year that's two of our years long, Jupiter's years are 12 years long, would a planet even be habitable in that range?  (And if this is the case, does that mean that all Vulcans go into Pon Farr at about the same time every seven years?  Eeep!  Talk about a disruption to the society!  Of course, if this is the case, how do they keep it secret?  Just kick every non-Vulcan offplanet for six months every seven years?)

Is there some other reason for a seven year cycle that I'm not thinking about?

But this brings me back to the first question, that’s bugged me for years. And perhaps provides an answer. If resources are (or were, when the species was evolving) so scarce that they can only afford to have a kid once every seven years, maybe it is designed to clear out deadwood. Maybe part of the reason for such a deadly heat is to reduce competition for resources which the species can’t afford to waste on non-reproducing members.

I wish fic spent less time on teh sex and more time on the biological, social, and cultural aspects of it.
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