Are we even both?

How can we be so sure that we are only the brain? Or only the body? Or better yet how do we even know that we weren't something else before that?

Just because we are human beings and we have brain and a body, doesn't mean that it is something we had before!

I tend to think that we existed even before that! Like before having bones, brain, hands, body etc, we might have been in the air waiting to evolve into something else. Like butterflies before becoming that, they were something else and then they evolved.

Like technology, like weapons, like everything!

Nothing of those were existing but there were only an idea away or problem solved away.