Trees don't grow even, they don't grow straight just however it makes them happy.
But like of each thing that in season grows.
An exponential growth is a simple doubling. One becomes two becomes four.
Hard to find anything lovelier than a tree. They grow at right angles to a tangent of the nominal sphere of the Earth.
Well, the security business has been growing. I think security is one of those areas where it's to some degree not linear but maybe exponential growth.
As the tree is bent, so it will grow.
Out of the trunk, the branches grow; out of them, the twigs. So, in productive subjects, grow the chapters.