Yeah it is
And yet it's
still more accurate than anything Derek can pull out of his hat.
"The human pineal gland becomes visible in the developing fetus at seven weeks, or 49 days, after conception. Of great interest to me was finding out that this is nearly exactly the moment in which one can clearly see the first indication of male or female gender.
Before this time, the sex of the fetus in indeterminate, or unknown. Thus, the pineal gland and the most important differentiation of humanity, male and female gender, appear at the same time...
...I already knew that the Tibetan Buddhist
Book Of The Dead teaches that it takes 49 days for the soul of the recently dead to 'reincarnate'. That is, 7 weeks from the time of death of one person elapses until the life-force's 'rebirth' into its next body...
...It takes 49 days from conception for the first signs of the human pineal to appear. 49 days is also when the fetus differentiates into male or female gender.
Thus the soul's rebirth, the pineal, and the sexual organs all require 49 days before they manifest."
He then makes a reference about how the above isn't entirely dissimilar to the old herbal doctrine of signatures "which suggested that a herb's properties depended upon how it looked. If a plant looked like a heart, it must be good for heart disease.
What I'm proposing is a 'doctrine of elapsed time'. If Buddhist texts and human embryology reveal that different developments require 49 days, the events must be related. This association is perhaps logically shaky, but also intuitively appealing."
It's a lot more scientific than "she'll be reincarnated soon. My spidey-senses tell me so".