2x2 grid, do this for 4 famous scientists { Instructions: SUBJECT // Build a gesture field G(x,y) from the subject’s inferred motion and attitude. G = ∇(pose_energy($ SUBJECT)) + ∇×(attitude_curl($ SUBJECT)) // Streamlines of G become the primary sketch lines: tapered, overlapping, confident. // Focal features (eyes, hands) sit at critical points of |G|. // Cel‑shadow patches = regions where ∇·G > threshold, filled with flat soft‑blue/grey. // Secondary study crops: placed along the perpendicular gradient of G at lower density. // Palette: warm beige, cream, charcoal, grey, soft blue (auto‑sampled from subject’s inferred mood). // Background: pure white, slight framing marks from contour of G at canvas edge. // Rendering: rough ink brush with visible construction strokes, no smoothing. }