It's not about the distance. It's about the number and diversity of things that you have access to. If you have access to 10 identical Chuck E. Cheese's restau

It's not about the distance. It's about the number and diversity of things that you have access to. If you have access to 10 identical Chuck E. Cheese's restaurants with a 10 minutes drive, you have less access than if you have access to 10 very different restaurants with a 10 min walk as it's typically the case in a dense city center. I agree that the relevant metric is time. In a dense environment, you typically have access to more and more diverse things than in a less dense, car dependent suburban environment, in the same amount of time.