Passage Summary: The author claims that because science is built on measurements, and measurements are built on units we just pick at random (like miles vs. kilometers), the entire field of science is ultimately arbitrary.

Conclusion: Science is an arbitrary pursuit.

Reasoning: Science depends on measurement, which in turn depends on the selection of units, and the selection of those units is an arbitrary process.

Analysis: The argument follows a transitive, 'chain-link' structure: A requires B, B requires C, and C has property X; therefore, A has property X. It essentially argues that a characteristic of a foundational requirement (the arbitrariness of units) must apply to the entire system built upon it (science). When looking for a parallel, find an argument that transfers a property from a fundamental requirement up to the final result.