How did piaget and vygotsky view the "journey" of cognitive development?

Piaget and Vygotski have their own theories and view the "journey" of cognitive development. Piaget believed that all are an individual learners and they learn all the things by themselves where the Vygotski believed that we learn from our society, social factors have part to the learning, such as a teacher, an adult or a friend, from them we learn many things.