Growing up, roads always used to have a clearly separated sidewalk with a height difference.
All new streets I see have no such curbs/height differences. Instead, it's just one "blur" of road/sidewalk.
What is the point of this? Or rather, why did they not always do this? Surely it's easier to just make it one big slab of asphalt?
Why did they go out of their way to make a "curb"/height obstacle before, but no longer?