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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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rational assumption

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "rational assumption" is correct and usable in written English.
It can be used when discussing a logical or reasonable belief or conclusion drawn from available information or evidence. Example: "Based on the data we have collected, it is a rational assumption that the new marketing strategy will increase sales."

✓ Grammatically correct

Science

News & Media

Human-verified examples from authoritative sources

Exact Expressions

10 human-written examples

Bearing in mind what Page has said in public this seems a pretty rational assumption to make.

In spite of the rational assumption that skiing while in possession of a firearm is a risky endeavour, the athletes that take part in the biathlon prove it can be done with style and finesse.

This perfect rational assumption requires complete information; all factors of the game should be common knowledge.

The rational assumption that the total series of all conditions is already given would hold only for things in themselves.

Science

SEP

At other times, in other contests, that logic - the rational assumption that the superior will always beat the valiant subordinate - stood firm, despite all the emotion and industry aimed at it.

News & Media

BBC

My organization, Second Chance Employment Services (SCES), understands that assuming the victim can easily leave an abusive relationship is not a rational assumption.

News & Media

Huffington Post
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Human-verified similar examples from authoritative sources

Similar Expressions

48 human-written examples

Based on rational assumptions, simplified expressions are also driven to evaluate those values.

Psychology and Behavioural Sciences have by now provided a large amount of empirical evidence showing how human behavioural tendencies in many instances depart from strict rational assumptions.

At the same time, a strategy may offer a reasonable action before the arrival of such a query, employing some rational assumptions regarding the data distribution.

Based on rational assumptions, the game theory is to study the decision-making mechanism and the balance of decision-making interactions [9].

With some rational assumptions, the model yields a novel relationship between grain size and diffusivity-weighted Grain Restriction Factor, U. The model predictions on grain size for a variety of binary alloys has been compared with that from the reported semi-empirical relation, numerical solution and experimental measurements, and good agreements have been achieved.

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Expert writing Tips

Best practice

When using the phrase "rational assumption", ensure the assumption is based on clear evidence and logical reasoning to enhance credibility.

Common error

Avoid presenting a "rational assumption" as an absolute fact; acknowledge that it is still subject to potential revision with new information.

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

83%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "rational assumption" functions as a noun phrase, often serving as the subject or object of a sentence. It refers to a belief or premise that is considered logical and well-reasoned, as supported by Ludwig's examples.

Expression frequency: Uncommon

Frequent in

Science

40%

News & Media

30%

Formal & Business

10%

Less common in

Encyclopedias

5%

Wiki

0%

Reference

0%

Ludwig's WRAP-UP

The phrase "rational assumption" is a grammatically sound and usable term for expressing a belief based on logical reasoning and evidence. Ludwig AI confirms its correct usage. While not extremely common, it appears across diverse contexts, including science, news, and formal writing. Related phrases such as "logical assumption" and "reasonable assumption" offer similar meanings. When using the phrase, ensure that your assumption is supported by evidence to avoid overstating certainty.

FAQs

How can I use "rational assumption" in a sentence?

You can use "rational assumption" to introduce a belief or conclusion that is based on logical reasoning. For example: "Given the increasing demand, it's a "rational assumption" that prices will rise."

What are some alternatives to saying "rational assumption"?

Alternatives include "logical assumption", "reasonable assumption", or "valid assumption", depending on the specific nuance you want to convey.

Is it always correct to use "rational assumption"?

While "rational assumption" is grammatically correct, its appropriateness depends on the context. Ensure that the assumption is genuinely based on reason and evidence. If the basis is weak, consider a more cautious phrasing.

What differentiates a "rational assumption" from a guess?

A "rational assumption" is based on logical reasoning and available evidence, while a guess is typically made without solid evidence. A rational assumption is an informed conclusion, whereas a guess is speculative.

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Source & Trust

83%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Most frequent sentences: