IMHO, the following two items in _README.md/Presentations_ are duplicated: - [Atomics Locks And Tasks](https://github.com/CppCon/CppCon2019/blob/master/Presentations/atomics_locks_and_tasks) by Rainer Grimm - [Back To Basics: Atomics, Locks, and Tasks](https://github.com/CppCon/CppCon2019/blob/master/Presentations/back_to_basics_atomics_locks_and_tasks/back_to_basics_atomics_locks_and_tasks__rainer_grimm__cppcon_2019.pdf) by Rainer Grimm