Some people even did not intend to do bad things, can in fact it can still do wrong, misery consequences. Every careless and don't see other people's well-intentioned, and the lack of a decisive person, all similar to harm them.
有些人即使没有存心做坏事，可事实上事情仍会做错，引起不幸的后果。凡是粗心大意、看不出别人的好心好意，而且缺乏果断的人，都一样能害人。
The study of formal languages and automata is essential for understanding the theoretical underpinnings of computer science.