Although in this case Sally worked on her own, she and others often collabo-rated on short- and long-term projects or simply consulted with peers for explicithelp. For instance, people often knew the experienced members of the commu-nity, and they might have requested their assistance when they stumbled upon anydifficulties. In addition, because individuals had scopes of different magnification,practitioners often knew whose scope was capable of resolving object featuresthat others’ might not have. So participants often traded viewpoints on theirobservations.