Besides curb cuts, the automatic door is one example of universal design in engineering. There are lots of facilities are using automatic doors nowadays such as London drugs, Walmarts, and Downtown library. The automatic door is beneficial, especially during the pandemic contactless becoming a tendency and essential. The design of the automatic door can search out ancient Rome over 2000 years ago by Heron of Alexandria. The automatic door is originally designed to move the doors of an Ancient Greek temple and was named machine number 37 at the time. This ‘machine number 37’ was connected by a trigger in front of the giant temple door with a hydraulic system that relied on heavy water displacement. When the priest would step forward and light the fire on the altar, the heat generated would kick the counterweights and pulley arrangement beneath it into action, which would subsequently open the door. Over the descent, the automatic door evolves its functions and benefit people with wheelchairs, strollers, and dollies.

The modern automatic doors experienced over 2000 years of evolution from all the feedbacks and adjustments to become successful. The elements changed from mechanical arrangement to pressure sensors and to motion detectors. All the changes are to make the design more suitable to fit each generation. This design inspires us in the direction of feedback when planning learning design that the design itself will need to adjust from all the voices and it will slowly become beneficial to learners.