Insight (noun)

1. The ability to understand a complex situation or problem.
2. An understanding of the true nature of something.

Origin:

Late 16th century (denoting perception or understanding): from in- "into" + sight.

Examples:

1. He has a great insight into the workings of the company.
2. The book provides an insight into human nature.
3. The study provides new insights into the problem.
4. The data gives us insight into consumer behavior.
5. The discussion provided valuable insights into the issue.