Okay so how come the number or humans is on the rise? Only every second baby is having the second go around?
Who says it’s only humans that get reincarnated

Doesn’t really matter, population growth is still a thing.

There’s currently more organisms on Earth than there were 4 billion years ago.

Pretty sure the Cambrian still has us beat.
Perhaps in variation of species, but any meaningful comparison of amount of organisms on Earth has definitely increased from 4 billion years ago.
It’s all the same person, when you reincarnate you also time travel which makes multiple of you exist at the same time.

This is the only way I’d accept it.

It’s not even unheard of as a suggestion even in more scientific circles.

en.wikipedia.org/wiki/One-electron_universe

One-electron universe - Wikipedia

Some humans nowadays are from dung beetles.
Some people don’t get the opportunity to reincarnate as a human again, people like C Kirk reincarnate as a lower and more vulnerable life form so their soul can learn the value of humility and empathy.
Yeah, but there’s still more organisms than there were 4 billion years ago when life started on a Barren Earth.
wouldn’t all the organisms today be a regurgitation of the organisms of the past?
Achtually every human being has two parents so there are a lot more people in the past than there are now /S
Humans steeply on the rise, animals sharply on the decline. We’re all reincarnating up.
That’s exactly what a cow would say.