Packard argued that the loss of vision in the blind cave insects he studied was best explained through a Lamarckian process of atrophy through disuse combined with inheritance of acquired characteristics.
Packard argumentou que a perda de visión nos insectos cegos de covas estudados explicábase mellor por medio dun proceso lamarckista da atrofia polo desuso combinado coa herdanza dos caracteres adquiridos.