The data is a little bit off in the case of collaborative languages. For example, Scheme is credited to Guy Steele and Gerry Sussman, but only Steele's age is listed in the chart.
Independently, this kind of analysis furthers the mythology that popular programming languages have singular creators. It's true that the vast majority of these projects were started and led by a singular leader or small group in their initial days, but by the time anyone has heard of them, they typically are the result of a collaboration between a team and a community of users and this is only more true in the modern age.
Independently, this kind of analysis furthers the mythology that popular programming languages have singular creators. It's true that the vast majority of these projects were started and led by a singular leader or small group in their initial days, but by the time anyone has heard of them, they typically are the result of a collaboration between a team and a community of users and this is only more true in the modern age.