HPSC1001 Chap.7 Underdetermination and Theory Choice
Underdetermination and Theory Choice
Underdetermination sets the chapter's scale
Underdetermination and Theory Choice begins with The course's observation and values problems converge when multiple accounts can accommodate the same result.
The chapter is not a list of labels: it asks the reader to use Underdetermination, Auxiliary Assumption and Theory Choice for different parts of a philosophical-argument argument.
Underdetermination fixes the object of analysis. A situation in which available evidence does not uniquely determine one theoretical conclusion.
In the Underdetermination analysis, this definition determines which evidence belongs in the answer and which attractive detail should be left outside the claim.
Auxiliary Assumption carries the central connection. A background claim needed to connect a theory with a testable prediction.
A strong explanation names the change, relationship or interpretive move rather than placing Auxiliary Assumption beside the evidence and expecting the reader to infer the link.
Theory Choice supplies a consequential test. Selection among competing accounts using evidence and additional standards.
The test matters only when it can narrow, redirect or overturn the initial reading built from Underdetermination and Auxiliary Assumption.
Auxiliary Assumption links evidence to the claim
The practical difficulty is a failed prediction can be assigned wholly to the central theory while auxiliary assumptions remain invisible.
To control that difficulty, annotate every piece of evidence with one role: establish Underdetermination, support the move through Auxiliary Assumption, or challenge the conclusion through Theory Choice.
A useful paragraph built around Underdetermination therefore contains a bounded claim, specific evidence, the inferential bridge supplied by Auxiliary Assumption, and a qualification tied to Underdetermination may be local and temporary rather than proof that evidence never discriminates.
Work the changed case before memorising a conclusion: Change an instrument calibration assumption while keeping the central theory and result fixed.
In this Auxiliary Assumption transfer, the changed fact reveals whether the original result followed from the evidence or merely from a familiar phrase.
Theory Choice changes the conclusion
When two interpretations remain possible, compare their treatment of Underdetermination.
The better account should explain more of the observed material through Auxiliary Assumption while taking the limitation attached to Theory Choice seriously.
Retrieval practice for Theory Choice should reproduce the three concept definitions, one evidence route and one counter-case from memory.
Reopening the source for Theory Choice is then used to correct the first missing link, not to reward fluent but unsupported recall.
For assessment transfer from Underdetermination, change the medium, actor or factual setting while preserving the chapter question.
If the same chain from Underdetermination through Auxiliary Assumption to Theory Choice still works, explain why; if it fails, identify the exact premise that no longer holds.
What this chapter covers
- 01
Underdetermination
- 02
Auxiliary Assumption
- 03
Theory Choice
- 04
Evidence route for Auxiliary Assumption
- 05
Boundary test through Theory Choice
Resolve a changed Underdetermination case
- 3State the case-specific meaning of Underdetermination and exclude one irrelevant detail.
- 3Trace the evidential or operational move carried by Auxiliary Assumption.
- 3Use Theory Choice to compare the preferred account with a plausible alternative.
- 3Report a conclusion limited by Underdetermination may be local and temporary rather than proof that evidence never discriminates.
Key terms
- Underdetermination
- A situation in which available evidence does not uniquely determine one theoretical conclusion.
- Auxiliary Assumption
- A background claim needed to connect a theory with a testable prediction.
- Theory Choice
- Selection among competing accounts using evidence and additional standards.
Underdetermination and Theory Choice FAQ
When reconstructing the argument, why does the order from Underdetermination to Theory Choice matter?
The order prevents the test from floating free of the claim it is meant to examine. Change an instrument calibration assumption while keeping the central theory and result fixed. Establish Underdetermination, trace the move through Auxiliary Assumption, and only then use Theory Choice to retain, narrow or reject the result.
When reconstructing the argument, how does a counter-case sharpen Auxiliary Assumption?
A counter-case changes one condition directly attached to Auxiliary Assumption while leaving unrelated details stable. Change an instrument calibration assumption while keeping the central theory and result fixed. If the conclusion changes, report the changed link; if it survives, explain how Theory Choice supports that resilience.
Exam move
Retrieve Underdetermination, Auxiliary Assumption and Theory Choice without notes, then reconstruct the evidence route described in The course's observation and values problems converge when multiple accounts can accommodate the same result. Apply that route to this changed task: Change an instrument calibration assumption while keeping the central theory and result fixed.
Finish by stating how Underdetermination may be local and temporary rather than proof that evidence never discriminates. limits the answer. Check the live The University of Sydney assessment instructions before using any operational requirement for HPSC1001.
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