I suspect it's the combination of spending the morning with three fabulous babies all under or around 3 mths and watching the marvelous A Child's World series but I am in awe of the amount that babies learn in those first few months.
The difference between the lovely Mattias (to use an example)and Oliver is huge. Mattias can't control his head or limbs yet and has no real grasp of anything around him whereas Oliver can sit up (mostly) and has control over his limbs (mostly) and there is a greater awareness going on.
Its actually interesting to see the progression of Sophie, Matt, Poppy and Oliver. They're all so close in age but a few months can make such a difference. At my Mothers group there's one baby who can now crawl and kind of stand up. He's only 2 1/2 moths older than Oliver. He is however and early developer.
It seems as though they reach a point where things start coming together for them. I remember the first time Oliver actually intentionally reached out and gripped something (a toy while lying on our bed), the first time he passed something from one hand to another (in the bath one day, blue turtle got passed around) the first time he rolled in his cot (I left him on his back and came back to find him on his tummy with a very confused look)He now sits on my lap and will focus on something and study it and try to eat it (my engagement ring is a big hit. Hmmmm, Sparkly)
The first time I gave him solids is very different to now. Back then it was little bits of food viewed with suspicion (what do you I have to 'chew'?) Now he gets excited by it and wants to play around with the bowl)
He will intentionally splash the water in the bath. He even copies you when you do it.
All this in such a short space of time. And it just gets better. Soon he will learn how to speak and figure out that I'm different to him and how to walk and how to lie (I didn't touch anything mummy, I just touched the cake. I didn't do it, Alex did! - watch A Child's World and you'll understand)
I can't wait!!!