I want to know the answer to the following question:
How can better service quality be achieved?
All the background I'm provided with is that "The reasons may include electric trains being seen as more modern and attractive to ride, faster and smoother service, and the fact that electrification often goes hand in hand with a general infrastructure and rolling stock overhaul / replacement, which leads to better service quality (in a way that theoretically could also be achieved by doing similar upgrades yet without electrification).". Is that enough to answer the question?
Answer: yes