After the talk, I realized that one of the toughest problem to deal with is how to balance out between efficiency and engineering ethics. Such projects involve but not limited to infrastructures, gasification, refinery, chemical plants and power station. Take power station as an example, power generation efficiency versus ethical issues. CO2 emission to the atmosphere, contaminated water which was used in cooling during the generation process are just two typical examples of disposed waste to the environment, which are commonly being treated as burdens to a company, entitled as waste managements. But through this useful lecture, I have learnt that there are more on ethical aspects in a project. One of the outstanding problem is safety, including safety culture, where trainings, awareness and alertness of the employees belongs to, basic safety practice, audit and taking ownership also plays a major role. The above-mentioned parts only include factor of human factor, there are still several factors that we need to process through during a project. Safety during the operation is carried out through design and safety review, alarms and interlocks etc. While management of change, lock and tag, entry permits are included in security of the venue where the project is carried out. In fact, there are much more aspects should be gone through in building and operating, without overlooking the ethical issues. My horizon has been broadened a lot after this meaningful lecture, especially when its conducted by an authority.