today the pit did seem to be drier. (this is its fourth day outside the fruit.) after reading about the danger of dehydration, i was hoping that the pits large size would mean the embryo was well protected. but squeezing the pit, it did not feel firm; it felt somewhat spongy. i removed the pit's coat with a dull knife. it was splitting already and there were some soft orangey-brown dents. i impulsively ripped the pit in half with my hands. there goes that one.
i suspect there is some rotting going on in there.
* the avocado is a dicot, so it has 2 cotyledons.
** gibberillic acid is a hormone found in plants.