Computer Science for IGCSE & O level - Automated And Emerging Technologies (Section 5 - No. 7)

Which of the following is a disadvantage of rule-based expert systems?

Easy to update with new information.

Difficult to scale and maintain.

Require a lot of data.

Offer very precise decision-making.

Scaling up, and keeping up-to-date with a rule-based system can be tough.