Why is attention the currency of life?

Tonight, at a meeting I attended, I was told that many spirits were present. It soon became obvious that the "teacher" was there with me. It seemed like every little thought in my head had an immediate answer. At one point I happened to wonder why attention is the currency of life.
The answer was swift...

The reason that attention is the currency of life should be obvious.
It has been established earlier that pretty much everything is a neural network. Neural networks are like fractals. They are self similar at many scales. On any scale, individual neural networks each act as a single neuron in the next larger scale neural network.

The intelligence and power of any neural network is in the quantity and quality of the connections between neurons. At a social level, every person is seeking to create new or better connections. Every time you pay attention, whether it is to friends, business dealings, or bed time stories; the process fine tunes your connections, it is you doing your duty as a neuron in the bigger brain.

It is programmed into the very nature of nature itself, that living beings will trade mainly in attention, for that is how higher life is formed.