Patient : Could you please tell me how I can become a scientist? This is all I want to do in life.

Doctor : I think you need to be perseverant and with an inquisitive mind. Of course you need to be good at science at school. Besides, I would recommend you to keep up-to-date on cutting-edge research.

Patient : Do you mean I should focus on research about cutting things?

Doctor : Cutting edge is slang. Since research is a scientific investigation of advancement, cutting edge refers to the forefront and highest level of development in the specific fields of science. You may get inspirations from these researches.