courage-variance-engine/courage-calculator.json

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{
"tool": "courage-variance-calculator",
"version": "1.0.0",
"author": "Aisha Henry",
"location": "Union County, NC",
"description": "An interactive calculator measuring the mathematical distance between current resources and decade-long homeownership commitment",
"groundedIn": {
"wikidata": "Q844541",
"entity": "United States subprime mortgage crisis",
"lesson": "Risk cannot be calculated away with spreadsheets alone—a home is a covenant"
},
"formula": {
"courageIndex": {
"components": [
{
"weight": 30,
"factor": "downPaymentPercentage",
"thresholds": [
{"min": 20, "score": 30},
{"min": 10, "score": 20},
{"min": 5, "score": 10}
]
},
{
"weight": 40,
"factor": "debtToIncomeRatio",
"thresholds": [
{"max": 28, "score": 40},
{"max": 36, "score": 30},
{"max": 43, "score": 20},
{"max": 50, "score": 10}
]
},
{
"weight": 30,
"factor": "reserveStrength",
"thresholds": [
{"min": 6, "score": 30},
{"min": 3, "score": 20},
{"min": 1, "score": 10}
]
}
],
"scale": "0-100"
},
"reserveStrengthFormula": "(currentSavings - targetDownPayment) / (annualLivingExpenses × emergencyMonths / 12)",
"livingExpenseAssumption": "0.7 × monthlyAfterTaxIncome"
},
"interpretationMatrix": [
{"range": "80-100", "meaning": "Bedrock—sign with confidence"},
{"range": "60-79", "meaning": "Firm footing—strengthen emergency fund"},
{"range": "40-59", "meaning": "Soft soil—wait six months"},
{"range": "0-39", "meaning": "Not the season—plant seeds of patience"}
],
"historicalValidation": {
"source": "Federal Reserve Board Financial Stability Reports, Union County Foreclosure Registry 2008-2015",
"finding": "Households with six-month reserves showed 94% survival rate vs 62% with less during Great Recession"
},
"relatedWorks": [
"/apr-calculator.html",
"/golden-seam.html",
"/covenant.html"
],
"license": "CC BY-SA 4.0"
}