2021
https://medium.com/@knoldus/box-pointers-in-rust-make-recursive-types-possible-8398fbc9f66e
https://nuancesprog.ru/p/13600/
2020
https://www.ralfj.de/blog/2020/12/14/provenance.html
    https://www.reddit.com/r/programming/comments/kd51te/pointers_are_complicated_ii_or_we_need_better/