21 Lessons for the 21st Century by Yuval Noah Harari

Score Explanation:

Source	Weight	Calculation	Weighted Value
NYT Mentions	0.25	ln(15 × 1.00 + 1)	0.6931
Wikipedia Backlinks	0.50	ln(8 + 1)	1.0986
Ratings Count	0.50	ln(0 + 1)	0.0000
Ratings Average	1.00	ln(1 + 1)	0.6931
OpenLibrary rating (avg)	0.10	ln(4.043478 + 1)	0.1618
OpenLibrary ratings (count)	0.10	ln(46 + 1)	0.3850
Total			3.0317

Note: NYT Mentions are adjusted by title complexity (a score based on word rarity).
Adjustment factor: 1.0 (complexity score ≥100,000), 0.1 (≥10,000), or 0.01(<10,000).
Higher complexity scores indicate more distinctive titles that are less likely to produce false-positive NYT matches.