It's like a tree. A tree (well, one kind) starts out as an acorn, then a seedling, then a very young skinny tree, then a bigger tree, then bigger & bigger until it gets old and falls over or is chopped down.
Everybody looks at it and thinks "tree."
But what if all the while the tree is struggling to be a tree? Like, "Omigod, acorns? I have to produce acorns? Every year???"