We've all been there?

Does "We've all been there" mean "We've all been in infancy"?

Background info:

Adults and children inhabit different states of mind (Image: Rebecca Green)
We've all been there, and none of us remembers. But psychedelic drugs, love and travel are just some of the ways we can roll parts of our brain back to infancy

WHAT is it like to be a bat? Philosophers of consciousness love toying with that question. We're fascinated by the possibility of minds so unlike our own. But there's a deep mystery far closer to home. Never mind bats – we barely even know what it's like to be a baby.
We've all been there, but none of us remember. As we develop into fully self-aware beings, our subjective experience of the world shifts dramatically. Once we leave infanthood behind, that early window on the world – and what it's like to look through it – is closed to us.