Question: What is the author\'s perspective on the challenges faced by digital sum?

Options:

1. They are minimal and easily overcome.
2. They are significant and require attention.
3. They are irrelevant to its application.
4. They are only theoretical in nature.

Correct Answer: They are significant and require attention.

Solution:

The author acknowledges that while digital sum has many benefits, it also faces significant challenges that need to be addressed for its continued success.