Which one of the following is not a limitation of the preoperational thought?

The preoperational stage (ages 2-7) in Piaget's theory has several limitations including centration (tendency to focus on one aspect), egocentrism (inability to see others' perspectives), and irreversibility (inability to mentally reverse operations). However, the development of symbolic thought is actually a major achievement and strength of this stage, not a limitation. Children begin to use symbols, language, and pretend play during this period.