Investment modeling for scalable agricultural learning - Norman Peter Reeves; Rebecca Pietrelli; Ian Brooks; Victor G. Sal y Rosas Celi; Kumpati Narendra; Jean C. Ngabitsinze; Maximo Torero Cullen; Anne N. Lutomia; John W. Medendorp; Julia M. Bello-Bravo; Barry R. Pittendrigh (PLoS ONE, 2026)