The memory of that scene for me is like a frame of film forever frozen at that moment: the red carpet, the green lawn, the white house, the leaden sky. The new president and his first lady. ↗
It's like your children talking about holidays, you find they have a quite different memory of it from you. Perhaps everything is not how it is, but how it's remembered. ↗
It is relatively easy to design for the perfect cases, when everything goes right, or when all the information required is available in proper format. ↗