There’s a theory that shark bites are caused, not by the desire of sharks to eat delicious human, but rather by sharks’ combination of an inquisitive nature and a lack of hands or facsimilies thereof. The theory goes that the reason so many shark bites involve the shark biting a chunk out of a swimmer and then trundling off into the distance is that the shark has only one part of their body, the mouth, which can has the sensitivity and control to find out what something is.
Watching the emergence of Investigating Finger puts my strongly in mind of this theory.
Rosa has hit a point in her development that I’d semi-forgotten from Ada’s: Investigating Finger Investigates. Suddenly she’s gained enough control over her hands and her index finger to be able to carefully and deliberately poke at and manipulate, well, everything. Peering intently, a little crooked finger will work over any intriguing object untl it’s been investigated to her satisfaction.
The interesting thing is that this has correlated with a sudden drop in the urge to cram everything into her mouth: hence, I conclude that like sharks, urge to taste the world is driven as much by the mouth being the only part of the body thet have much control over