Evidence-backed explainers, current datasets, and visual comparisons.
An interactive loan-amount by maturity reference comparing SPX box financing with Robinhood margin, including conditional capital-loss tax benefits, interest deductions, fees, rate sensitivity, and dated market evidence.
A debt-aware view of how U.S. household balance sheets change across the wealth distribution, using Federal Reserve data through Q1 2026 and explicit methodology caveats.
An executable map of frequency, tuning, scales, chords, and notation that verifies the original article's arithmetic while separating its strongest software models from psychoacoustic and cultural overreach.