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Argument from Waste (Argumentation Scheme)

Also Known As: sunk cost argument throwing good money after bad Concorde fallacy
Argumentation Scheme ID: scheme_from_waste

Definition

The argument from waste contends that discontinuing a course of action would waste all the resources (time, money, effort) already invested in it, and therefore one should continue. This scheme exploits the psychological pain of loss by framing abandonment as wasteful rather than rational. While sometimes legitimate (when the remaining investment is small relative to the expected payoff), it becomes fallacious when past costs are treated as relevant to future decisions even though they are irrecoverable.

Examples

We have already spent $5 billion on this fighter jet program. If we cancel it now, that money will have been completely wasted. Therefore, we must continue funding the program to completion, even though costs have doubled and the original military need has changed.

A startup has spent three years and $2 million developing a mobile app that market research now suggests has little demand. The founder argues: 'We've put everything into this — we can't walk away now. We need to keep going until we launch.' The sunk costs are driving the decision rather than the current market reality.

A graduate student is six years into a PhD program in a field she no longer finds fulfilling and where job prospects are poor. She tells herself: 'I've already given up so much time and turned down other opportunities — I have to finish, no matter what.' Her past investment is preventing her from honestly evaluating whether continuing makes sense.

Verification Steps
Verification Steps
Binary yes/no questions that an AI must answer to detect a reasoning pattern in a text.
Each of the 452 aspects has verification steps — simple yes/no questions designed to systematically detect whether a pattern appears in a text. For ad hominem: "Does the argument attack a person rather than their claim?" For false dichotomy: "Are only two options presented when more exist?" This ensures consistent, reproducible analysis.

Binary (yes/no) questions an LLM must answer to identify this aspect:

  1. 1

    Is past effort, time, or money cited as a reason to continue?

    Type: binary
  2. 2

    Is the argument that stopping would 'waste' the prior investment?

    Type: binary
  3. 3

    Are future costs and benefits evaluated independently of past investments?

    Type: binary
Deep Dive
The expandable detail section on each aspect page with examples, psychology, and counter-strategies.
The Deep Dive section provides in-depth information about each aspect: a real-world example showing the pattern in action, an explanation of why it works psychologically, practical advice on how to counter it, alternative names, and links to related aspects.