Telos-purpose/end or result of a course of action. A posteriori, based on empirical evidence
The phrase teleological argument is used to refer to arguments for God's existence by looking at things in the world to try and show they have been designed for some reason or purpose. They explore if there is a designer of things that appear to have been designed and whether that designer is God.
Aquinas- the teleological argument was the last of his five ways and were written in Summa Theologica
Design Qua purpose:
Observations of non-conscious beings. When you look at the natural world you can see that everything in it follows natural laws, even if they are not conscious, thinking being (example). If things follow natural laws they tend to do well and have some goal or purpose (example). However if a thing cannot think for itself it does…