The natural world has hundreds of examples of the reduction of parts through the processes of evolution.
An example of this is grass: grass has tiny green flowers that have lost their petals. The reason for this is that these flowers are no longer pollinated by insects, but pollinated by wind so colourful petals are unnecessary to the survival of grass.
Another example is that moles have lost their eyes, if moles had eyes they would get infected due to dirt getting in as they burrow underground, so fur has grown over the empty eye sockets.
In this way I started to develop a new theory of evolution.