But that apparently didn’t make most humans to think that human babies are more sentient/more complex in experience. Actually, we pretty much thought the reverse. Untill mid 1980s, most doctors do not use anesthesia in operations for newborn human infants.
Speaking of synaptic connection, there’s another problem: Human adults have less than the average human infants. Peter Huttenlocher “showed that synaptic density in the human cerebral cortex increases rapidly after birth, peaking at 1 to 2 years of age, at about 50% above adult levels . It drops sharply during adolescence then stabilizes in adulthood, with a slight possible decline late in life.”
But that apparently didn’t make most humans to think that human babies are more sentient/more complex in experience. Actually, we pretty much thought the reverse. Untill mid 1980s, most doctors do not use anesthesia in operations for newborn human infants.