Memory is a funny thing and significantly more fluid and variable than most people realize. I suspect that none of you truly have memories of cribs days and have rather conjured up these memories which you honestly believe to be real. It's an incredibly fascinating subject with a lot of good TED talks
I humbly agree with you BUT in my studies of the workings of the brain (
I entertained getting a PhD in AI but never finished) there is very good evidence that the brain retains everything in your life to a very specific detail (
All our senses - sight, smell, touch, sound and perhaps sensory input we have not realized yet) like a series of pictures with sound, Look up the work of Wilder Penfield
https://en.wikipedia.org/wiki/Wilder_Penfield
for more information. Most if not all of us can not access those memories. Also the access mechanism doesn't begin to fully develop until most of us are out of the crib and most are no longer breastfeed. Exceptions; some babies are breastfeed till they are five, some kids confined to a crib almost that long.
The difference is long term and short term memory. Our short term memory literally works when we come out of the box (
pun not intended for you cesarean born) and confined to distinct portion of the brain Think of it as cache with a finite size so new experiences are replacing previous experience and you not going to retain getting swatted on the butt to make you breath when more immediately important things (
Being hungry, wet, soled diapers or tired). We even learn in the womb (
listening to Bach or reciting the times tables appears to improve your child's cognitive powers for a lifetime once they exit the womb).
Our early memories are stored in is short term (
easily accessed) memory and the synaptic paths to the long term storage (
think of the much of the brain as a hard drive with tremendous storage that never gets defragged) just don't get developed. Every time you access long term memory you improve the synaptic path an thus certain important facts do get retained by the third year of ones life (sometime after your 2nd birthday normally) but if you don't access those often you lose the ability to access them consciously at all.
The human brain builds and by 2 and a half we are developing more than rudimentary synaptic paths to specific bits of knowledge (
long term memory) I say that because as we built the synaptic paths (
how we access) we only build paths to the important stuff and the fluff is lost to most all of us. (
Photographic memory and total recall being exceptions).
There are other parts of the brain that handle motor skills, unconscious memory like telling the body to breathe, etc.) The we have only scratch the surface of understanding the complexity If we can ever interface a computer to a human brain think of the computational power we could develop (
I'm rambling).
I do agree with you that it is "...
an incredibly fascinating subject..." that if we can ever figure out how the various parts of the brain interconnect we can truly develop AI. Example were trapped in crib and we want to escape so we try new things (
climbing out, crying out, breaking out) until we are distracted by a mobile, a rattle or we succeed (
Mom picks us up). Like a dog trying to retrieve a treat we demonstrate intelligence from at least birth. We know so little of how our brains or a dog's brain accomplish this we are still unsuccessful at developing AI.