After a decade of tool innovation, what comes next?

A decade ago, now-seminal work showed that children are strikingly unskilled at simple tool innovation. Since then, a surge of research has replicated these findings across diverse cultures, which has stimulated evocative yet unanswered questions. Humans are celebrated among the animal kingdom for our proclivity to create and use tools and have the most complex and diverse technology on earth. Our capacity for tool use has altered our ecological environments irrevocably. How can we achieve so much, yet tool innovation be such a difficult and late-developing skill for children? In this article, I briefly summarize what we know about the development of tool innovation, then discuss five outstanding questions in the field. With a focus on different empirical and theoretical perspectives, I argue that addressing these questions is crucial for understanding fully the ontogeny of one of humans' most notable skills.

Automated summary

A decade ago, research revealed the strikingly limited tool innovation skills of children, leading to numerous unanswered questions. This article summarizes the current knowledge on the development of tool innovation and presents five outstanding questions in the field. By examining various empirical and theoretical perspectives, the article argues that addressing these questions is crucial for a comprehensive understanding of the ontogeny of one of humanity's most notable skills.