Here is a modest attempt to summarize the main scientific evidences for design in our world, for those who have been told that such evidence does not exist.
The unique fitness of nature for carbon-based life and intelligent beings of our biology is an empirical discovery.
Surely there could not be an equivalent ensemble of fitness in nature for some other type of life.
One area where very fast nerve conduction is vital is vision, more specifically, in keeping the eyes fixed on some object in the field of vision while in motion.
How is it that an ant appears proportionately so much stronger than a trained human weight lifter?