INSIGHT

[noun] - (the ability to have) a clear, deep and sometimes sudden understanding of a complicated problem or situationProfessor Becker provided me with/gave me many useful insights into the theory of money supply. [C]It was an interesting read, full of fascinating/valuable insights into the most basic aspects of human relationships. [C]Being with his family for a few days I gained one or two insights into the reason he behaves the way he does. [C]He was a brilliant actor who brought deep psychological insight to his many roles. [U]