Assume your "knowledge base" (=working memory) contains the following observations about an animal Splashy:

• Splashy has feathers.
• Splashy lays eggs.
• Splashy does not fly.
• Splashy is black and white.
• Splashy swims.

(a) Use "circuit visualization" with time stamps to show how the ZOOKEEPER rule-based system applies backwards chaining from the following hypotheses in the order:

• Splashy is an ostrich.
• Splashy is a penguin.
• Splashy is an albatross.

Take care to use the hypotheses in the specified order and indicate changes to the working memory when they occur.

(b) Rework the exercise with an additional observation:

• Splashy has long legs and a long neck.

The other properties are unchanged.

(c) Why is the result peculiar? What can be done about it?