不要担心你在数学上遇到的困难;我敢保证我遇到的困难比你还大得多。
If something is boring after two minutes, try it for four. If still boring, then eight. Then sixteen. Then thirty-two. Eventually one discovers that it is not boring at all.
The most important thing in a computer is the operating system.
I tend to think that the camera is much more reliable than the human eye.