Validate L1, L2
L1 and L2 are two readings — chapters of a book. Each weighs 12% of Ω, with a strict exponent: even a partial gap in reading weighs heavily. Progress is measured entirely by reading itself, headings and subheadings excluded — nothing to adjust here.
Ω += 0.12 · L1^2 + 0.12 · L2^2