I’ve been thinking about time as a kind of diagnostic tool, a way to understand the moment we’re living in. If future time = present time + (Δt × signal strength), then the future isn’t somewhere ahead of us. It’s here... but blurry. Lists like Forbes 30 Under 30 are one of those signals. This year’s top cities (NY, SF, LA, Boston, Chicago) map almost perfectly onto the places with the highest AI job density + the strongest builder/creator ecosystems. Even the funding tells its own story: $3.8B distributed across 600 honorees. Time leaves traces of signals to anticipate & I’ll dive deeper into the data.

My last post shared my personal experience with disappearing third places. This one looks at the data. Using the National Neighborhood Data Archive (NaNDA), I analyzed three decades of establishment trends across U.S. neighborhoods where people could eat, shop, exercise, and gather from 1990 to 2021. The dataset shows which spaces grew, which collapsed, and where access declined. It also reveals a clear pattern: America’s social infrastructure shifted, segmented, and became more paywalled.