Possible Clues:

• Logical 'razor' creator
• Philosopher who posited that the simplest explanation is the most likely one
• William of ___ (philosopher with a “razor”)
• According to ____’s razor, assumptions should be minimised in explanations
• Philosopher who lent his name to a 'razor'
• Philosopher who favored simple explanations
• Philosopher with a "razor"
• Creator of a philosophical 'razor'
• Philosopher borders on optimistic, leading academic stream
• Razor name?