A) True, by definition - Parker Core Knowledge

Understanding the Context

What Does “A) True, by definition” Actually Mean?

The phrase “A) True, by definition” signals a clear shift from ambiguity or assumption to unambiguous truth rooted in established meaning. When someone says this, they are not offering an opinion or a conjecture; instead, they assert that a statement follows directly from the accepted definition of a term or concept.

For example:
Statement: “A quadrilateral is a polygon with four sides.”
Clarification: “A) True, by definition—because a polygon is defined as a closed plane figure with at least four straight sides.”

In essence, “by definition” removes doubt by anchoring the claim in a universally accepted meaning.

Key Insights

Why “By Definition” Matters: Logic and Precision

• Avoids Miscommunication:
  Without specifying that a statement is true by definition, listeners or readers might misinterpret it as factual, contextual, or hypothetical. This phrase acts as a logical safeguard.

• Strengthens Argumentation:
  In science, mathematics, and philosophy, many concepts rely on strict definitions. Claiming something “by definition” grounds arguments in objective reality rather than subjective interpretation.

• Enhances Clarity in Technical Writing:
  In fields like law, medicine, and computer programming, precise definitions prevent errors. For instance, “An IP address, by definition, is a unique identifier in a network” eliminates confusion.

Final Thoughts

Real-World Examples Where “By Definition” Clarifies Meaning

1. Mathematics:
   “A triangle is defined as a polygon with three sides—hence, all triangles are true figures with three straight edges.”

2. Legal Context:
   “Per statute, a corporation is defined as a legal entity separate from its owners—this truth is true, by definition.”

3. Technology:
   “Bitrate, by definition, measures data transmitted per second in digital audio—thus a 256 kbps stream is measured accordingly.”