Technology
What did the Allgood Trio come up with? Retractable stairs! These steps look like ordinary stone steps, so they don't detract from the building's exterior. But when the button is pushed, something amazing happens: the normal-looking steps transform into a means for the woman in the wheelchair to enter the building. All she has to do is press a button! These steps are called the Allgood Trio Sesame steps. Watch the video below to see how this remarkable invention works.
