Rhetorical Appeals
Logos: Cost-​Benefit Analysis

Make logical arguments by systematically weighing costs against expected benefits.

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What & why

What it is
A logical analysis framework that systematically weighs the advantages and disadvantages of a proposed action or decision. This technique helps audiences evaluate options by quantifying or clearly articulating both the potential gains and losses associated with different choices.
Why it works

Human decision-making evolved around resource trade-offs. Our ancestors constantly weighed energy expenditure against potential gains. Cost-benefit framing taps into this ancient calculus, making decisions feel rational and quantifiable. When you present clear costs alongside clear benefits, you reduce the cognitive load of complex decisions and provide a defensible framework for action.

Before & after

Before

“This will be worth the investment.”

After

“Implementation costs $100K upfront plus $20K annually, but saves $200K yearly in manual processing, paying for itself in 7 months.”

When you’ll use it

Justifying a software purchase by comparing implementation costs against productivity gains

Presenting a hiring decision by weighing salary costs against expected revenue contribution

Proposing office relocation by analyzing moving expenses versus long-term rent savings

Recommending process changes by showing current inefficiency costs versus improvement investment

Pro tip

Present concrete numbers for both costs and benefits with timeframes.

Questions & answers

3 questions

What is cost-benefit analysis in business presentations?

Cost-benefit analysis systematically compares the costs of a proposed action against its expected...

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How do I present cost-benefit analysis effectively?

Include all relevant costs and benefits, use consistent timeframes, quantify when possible, ackno...

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What factors should I include in business cost-benefit analysis?

Include direct costs, indirect costs, opportunity costs, implementation costs, training costs, ex...

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Learn more

Wikipedia - Cost–benefit analysis
Fiveable - Cost-Benefit Analysis (Speech & Debate)

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