I found it frustrated when I found some of my basic assumptions not true.
And I realized that, whatever I am doing, I always assumes something in pervious.
So I use this page to note some interesting assumptions made by me or I met, regardless they are proved true or false finally.

## Programming

### quick-sort Is Always the Fastest Sorting Algorithms

false, when the array is not that long, inserting sort is much faster.

### Atomic Operations of Integral Types (such as int64) Are lock-free

false, it depends on the hardware.

You can check via compiling and run the following codes: