What does the P/E ratio help investors understand?

What does a high P/E ratio generally suggest about investor sentiment towards a company?

Why is it essential to consider the P/E ratios of companies within the same industry?

Which of the following factors can contribute to a higher P/E ratio for a company?

What is a potential risk of relying solely on the P/E ratio for investment decisions?

Why is it crucial to conduct thorough research beyond just considering the P/E ratio?