He found that they were resistant to deducing the hypothetical, to speculating about what might be, and he found finally that they didn't deal well with abstractions or using logic on those abstractions.
Encontró que se resistían a deducir lo hipotético, a especular sobre lo que podría ser, y encontró finalmente que no se llevaban bien con las abstracciones o el uso de la lógica en esas abstracciones.