Intelligent design in the world is a rational conclusion based on thousands of years of observation and reflection.Um, it's also a rational conclusion based on thousands of years of observation and reflection that heavier objects fall to the ground faster, and that the Sun, planets, & stars rotate around the Earth.
That is not a compelling argument at all. Science education is precisely the business of explaining to people why scientists have concluded that things don't necessarily work the way they seem to do to a naive observer.
It's the same way with evolution. The naive observer says, "gee those creatures are really complex, and I've never seen anything like them. I can't see how they could have evolved from something else!" The scientist proceeds to search for the story behind the story.
Archival ping.