nTu = nTube coherent bundles of strings.
nCl = nCell coherent bundle of tubes. The bundle is bounded by a woven membrane of strings and tubes.
- Urban v suburban v small city v rural
- Baby boomers v Gen X v Millennials v Gen Z.
- Native Born v Foreign Born
- Catholic v Protestant v Muslim v Jewish v Asian v Secularist
- Caucasian v American Black v Latin v Asians v Native People
- Male v Female v LGBT
- Very rich, rich, median, poor, very poor.
- North East v Midwest v South v Middle States v West v West Coast
Business and Non profits.