i'll take a stab at what the author of that comment might have meant - how I understood it at least
there are 2 ways you can define "walkable"
1. it is physically possible to walk there - e.g. there are paved sidewalks
2. it is convenient to walk from the place you are to the place you need to be
i think that the misunderstanding here might be that you and the comment above are thinking about 1 while the problem is actually 2
to pull a quote from the article:
"students who live in dormitories are able to work, eat and worship all within walking distance of their homes"
there's also a link to this concept of a "15 minute neighborhood"[1] where everyone can walk to their basic daily needs w/in 15 minutes, or beautifully summarized as “Put the stuff closer together so it's easier to get to the stuff.”
so the proposed problem is that the set of things w/in that "daily needs" category, AKA the "stuff", might grow, due to the increasing diversity of the population you're servicing, to a point where its not possible to give that to everyone
there are 2 ways you can define "walkable"
1. it is physically possible to walk there - e.g. there are paved sidewalks
2. it is convenient to walk from the place you are to the place you need to be
i think that the misunderstanding here might be that you and the comment above are thinking about 1 while the problem is actually 2
to pull a quote from the article:
"students who live in dormitories are able to work, eat and worship all within walking distance of their homes"
there's also a link to this concept of a "15 minute neighborhood"[1] where everyone can walk to their basic daily needs w/in 15 minutes, or beautifully summarized as “Put the stuff closer together so it's easier to get to the stuff.”
so the proposed problem is that the set of things w/in that "daily needs" category, AKA the "stuff", might grow, due to the increasing diversity of the population you're servicing, to a point where its not possible to give that to everyone
[1]https://www.strongtowns.org/journal/2019/9/6/7-rules-for-cre...