There are some sources from which generally defects are detected those are given below:

1. Education:

• It ts the main source of detection of defects

• For developing or preparing any software artifact we may have proper education background

• The education background mainly belongs to the domain that we are working in.

• Even if we have theoretical knowledge we are unable to prepare these type of software artifacts

• So that one has practical knowledge and experience.

• Otherwise it may be difficult for the entire team to work on particular software product.

2. Communication:

• Communication is a key thing in any software related works

• It is recommended to have positive and enthusiastic communication when we are working with others.

• Even though they might have done something wrong, use your pitch low.

• Here,the software engineer was not informed about artifacts by a colleague.