Why is feedback important?

Okay. Let us first understand what is feedback? Information about reactions to a product, a person’s performance of a task, etc. which is used as a basis for improvement. Now let us understand in term of business and let us think like

Clock is broken. Reveal answer.

Yesterday I asked a puzzle about broken clock. Today I am giving the answer and How did I solve it. My first and clear approach was identified a total sum of 1 to 10 which is 55. But if we need to