发明的故事不乏如是桥段：历尽艰辛，大量试错，终于觅得良解；抑或是，久久苦思不得，因一个偶然事件，机缘巧合，灵感翩然而至。创新过程看似随机。足够勤奋，足够幸运，遍尝无穷可能性，总能「啊哈」找到靠谱解法。然而，随机试错，代价不菲。试错次数越多，消耗的人力物力、时间成本越多。问题迟迟不解决，大家蒙受损失，苦不堪言。有没有更聪明经济的方法，系统创新？这便是 TRIZ （俄语缩写，对应的英文名是 Theory of Inventive Problem Solving）。
系里要求写的 self reflection。渣渣的英语 >< 还是放在博客里，留个纪念吧。从未做过如此艰难的一个事儿: 问题层出不穷嗷嗷等待思索，无穷琐碎日日忍耐。拼脑力拼体力拼心态，开头诸多不顺遂，结尾扳回一程，也算有始有终了。两年，学业一无所成，泪目 T^T。
In the book What I Talk About When I Talk About Running, Haruki Murakami wrote: suffering is optional. This quote quite suits for the journey of my major project. I choose the challenge, suffer from it, and eventually learn a lot during the journey. It is hard to recall exactly when and why I chose this topic as my major project one year ago. However, even now I can clearly remember and feel the pain when working on it. I met too many difficulties from the very beginning to the end. In my previous education and research experience, I can always read papers and then modify or directly use the methods in the papers to set up my own research. Unfortunately, this time, this research is highly exploratory rather than confirmative. There are only a small number of papers related to my research question and almost no existing method I can rely on. The theoretical background seemed thin and the research method was unknown. When I first presented my research proposal in the labgroup meeting, I received so many doubts and criticisms. Especially, there was a PhD student who continuously asked questions which I cannot answer or even cannot understand and he kept laughing at my proposal.