Science takes time ...
Hartle & Thorne, 2025:️ https://arxiv.org/abs/2509.05436
"The research for this paper was completed in 1972, and Jim and I began writing it in that same year but then got distracted for several decades by other projects. In 2000, Jim completed a first draft and gave it to me with some public fanfare on the occasion of my 60th Birthday Symposium. I then let it languish until Jim‘s 80th Birthday Symposium in 2019 ..."
(found via colleagues on LinkedIn)