Simple ratios spread because they are teachable. Real affordability depends on debt payments, health costs, transportation, and savings goals. A classroom debate: two identical incomes, different commutes and family obligations, does the same rent cap fit?
Spending’s housing vignettes already ask students to walk a rent-versus-life tradeoff in human terms, pair that with Beatriz sending money home or Cari debating whether a shorter commute is worth a tighter grocery line. Same percentage on the board, two different stomach drops: that is Jennifer Degenhardt’s story voice doing the heavy lift.
Have students compute housing plus utilities as a share of take-home pay in hypothetical scenarios. Discuss why gross-income rules can mislead part-time workers with variable hours.
Connect to policy literacy: why housing stress shows up in personal finance forums as both individual budgeting and structural constraints, keep analysis respectful and evidence-based.