Retired city planners never envisioned a world where we were so collectively anxious/antisocial that waving and inviting someone onto your porch 20-40 feet from

Retired city planners never envisioned a world where we were so collectively anxious/antisocial that waving and inviting someone onto your porch 20-40 feet from the sidewalk would be considered a “sad” state of affairs. Is it the planning that’s in a sad state?