Michael Bierut 2: The genius of the London Tube Map

Michael Bierut at Small Thing Big Idea 2018
The genius of the London Tube Map  (transcript)
Summary
What? The map I also use always when I ride in trains in Tokyo works because it really isn't a map at all.
What does it mean?
We call something that rivers, mountains, parks and many other things are drawn maps. If the stations are crammed in those maps, it's too complicated for people to ride in trains.
A man realized that people only wanted to know where to get on and off from a train map. It's shown by only lines and stations are equally spaced dots and he created a route map that was like a diagram or a scheme or a system.
This is a consequence that a man challenged a user interface that is focusing on who you're doing this for, 1) being simple, 2) and thinking in a cross-disciplinary way. 3)

He just wanted people to understand where to get on and off.

Words in this story
periphery /noun/  edge, outer edge, fringe, boundary, border, the outer limits or edge of an area or object.
correspond /verb/ correlate with, agree with, have a close similarity; match or agree almost exactly.
interface /noun/ a point where two systems, subjects, organizations, etc., meet and interact.
disciplinary /adj/ concerning or enforcing discipline