
What does a PMI diffusion index actually measure?
Breadth, not magnitude — a diffusion index counts how many firms report improvement, which is why 50 is a line, not a level.

Rekha Patel reports on the work behind everyday products and systems — from Miami family businesses and e-book distribution economics to automation chains, security audit findings and the bias inside systems that allocate capital automatically. Her features focus on process, cost and where things break.