山勘

1. Origins, structure, and basic meaning

• Structure: 山勘 is read as やまかん and can mean “wild guess” or “hunch”, depending on context.
• Basic usage: The examples show guessing an unknown answer and being urged to consult evidence.

2. Common pitfalls and similar expressions

• Distinguishing senses and uses
  • It is a guess based on intuition without sufficient evidence, unlike a calculation or estimate supported by information.