Why does Thomas Aquinas contribution matter and how does affect science today?

Thomas Aquinas was a Roman Catholic theologian. He arranged Christian Doctrine in a systematic manner. That means you start at one point and develop your idea.

In the history of the United States you start studying with Jamestown, Virginia, the first English Colony. (You may start with the Spanish.)

Then you go to the Pilgrims.

Before there was systematic thought, you could start anywhere. In the Iliad, you start in the middle of the battle. It is arranged hodgepodge not systematically.

Thomas Aquinas created modern thinking techniques.