Expert Ease, an early expert-system tool/shell, was developed under the direction of which artificial intelligence pioneer?

Introduction / Context:
Many notable AI systems and shells were shepherded by leading figures in the field. “Expert Ease” is remembered as an early expert-system tool associated with British AI efforts. This question tests historical knowledge: connecting a specific tool to the researcher who led its development.

Given Data / Assumptions:

• We are identifying leadership (“under the direction of”).
• Candidate names include foundational AI pioneers and theorists.
• Expert Ease refers to an expert-system environment/tool.

Concept / Approach:
Donald Michie was a prominent British AI researcher who helped establish and direct AI research institutions and projects, including work on knowledge-based systems and tools. Expert Ease has been historically attributed to efforts under his direction. The other names, while seminal in AI, are associated with different milestones: John McCarthy (Lisp, time-sharing AI labs), Lotfi Zadeh (fuzzy logic), Alan Turing (foundations of computation).

Step-by-Step Solution:

Verification / Alternative check:
Historical AI literature and retrospectives on UK expert systems reference Michie’s leadership in expert-system development programs, aligning Expert Ease with his direction rather than with the other figures listed.

Why Other Options Are Wrong:

• John McCarthy: Lisp and foundational AI, but not the director tied to Expert Ease.
• Lotfi Zadeh: fuzzy logic originator, not Expert Ease.
• Alan Turing: foundational theorist; predates expert-system shells.
• None of the above: incorrect because Michie is correct.

Common Pitfalls:
Associating any expert-system tool with McCarthy due to Lisp; overlooking UK-centric AI developments led by Michie in the era of knowledge-based systems.

Final Answer:
Donald Michie