https://docs.google.com/document/d/e/2PACX-1vSt2VB1zQAJ6JDMaIA9PlmEgBxz2K5Tx6w2JqJNeYCy0gU4aoubdTxlENSKNSrQ2TXqPWcuwtXe6PlO/pub

2021
https://www.reddit.com/r/cpp/comments/psoic2/borrowing_trouble_the_difficulties_of_a_c/
https://www.reddit.com/r/cpp/comments/qahrnp/c_borrow_checker/