In the original published article, the following Acknowledgement was missed:
This work was supported by a seed grant from the Rock Ethics Institute at the Pennsylvania State University.
The author apologises for this error.
Published online by Cambridge University Press: 14 October 2026
In the original published article, the following Acknowledgement was missed:
This work was supported by a seed grant from the Rock Ethics Institute at the Pennsylvania State University.
The author apologises for this error.