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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
a bad assumption
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "a bad assumption" is correct and usable in written English.
It can be used when discussing a belief or idea that is incorrect or unfounded. Example: "Making a bad assumption about the project's timeline can lead to significant delays and complications."
✓ Grammatically correct
News & Media
Academia
Science
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
16 human-written examples
"That's not a bad assumption," Low said today.
News & Media
A bad assumption will yield a bad estimate, even if the model itself is accurate.
News & Media
It is not a bad assumption, as far as assumptions go.
News & Media
Maybe it was a bad assumption, but it got me through the day.
News & Media
"People who assume I want to run for elected office may be dealing from a bad assumption," he said.
News & Media
So I believe on the whole that diminishing marginal utility is not such a bad assumption, but this clearly relies on that, so you're right but I don't think that's the critical problem.
Academia
Human-verified similar examples from authoritative sources
Similar Expressions
44 human-written examples
That, of course, assumes the recipient got the file attachment at all--which is a bad assumption--and that the person has Word, PowerPoint or Acrobat to read it.
News & Media
I.e., a force designed to win major wars could handle small wars, a demonstrably bad assumption as evidenced in Vietnam, Afghanistan, and Iraq.
News & Media
That's a really bad assumption, because we have to remember, this organism, the chimpanzee, has an evolutionary history just as long as ours.
He added: "The industry was not prepared because it believed it had mitigated the risk … And that clearly was a very bad assumption".
News & Media
If you've bought a song or album, Ping assumes you like it (bad assumption), but none of your actual listening activity appears in your stream.
News & Media
Expert writing Tips
Best practice
When using "a bad assumption", clearly articulate why the assumption is flawed or incorrect to strengthen your argument.
Common error
Avoid exaggerating the consequences of "a bad assumption" without providing sufficient evidence or context. Overstating the impact can weaken your credibility.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "a bad assumption" functions as a noun phrase that identifies a specific type of assumption. It typically serves as the subject or object of a sentence, denoting an assumption considered to be flawed or incorrect. Ludwig AI confirms its correct grammatical usage.
Frequent in
News & Media
45%
Academia
25%
Formal & Business
15%
Less common in
Science
10%
Wiki
5%
Reference
0%
Ludwig's WRAP-UP
In summary, "a bad assumption" is a noun phrase used to denote a flawed or incorrect belief, commonly employed across diverse contexts such as news, academia, and formal communications. As Ludwig AI confirms, the phrase is grammatically correct and serves the purpose of questioning the validity of a premise. Related phrases include "a flawed premise" and "an incorrect supposition", each carrying slight variations in meaning. When using "a bad assumption", ensure to clearly articulate the reasons for its flaws to strengthen your argument. Remember that overstating the impact of "a bad assumption" without evidence can weaken your credibility.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
a flawed premise
Emphasizes the logical defect in the starting point.
an incorrect supposition
Highlights the factual inaccuracy of the belief.
a false belief
Focuses on the untrue nature of the conviction.
a mistaken notion
Underscores the error in understanding.
an unfounded assumption
Stresses the lack of evidence or basis for the belief.
a dubious hypothesis
Suggests the idea is questionable and requires further scrutiny.
a weak foundation
Implies the underlying basis for a decision or argument is unstable.
a shaky conclusion
Highlights the uncertainty and potential instability of the deduced outcome.
a misguided expectation
Focuses on the misdirection or misjudgment in anticipating a certain outcome.
a fallacious inference
Emphasizes the logical error in deriving a conclusion from given information.
FAQs
How can I use "a bad assumption" in a sentence?
You can use "a bad assumption" to point out a flawed premise or incorrect belief. For example: "Relying on a bad assumption can lead to poor decision-making."
What are some alternatives to saying "a bad assumption"?
You can use alternatives like "a flawed premise", "an incorrect supposition", or "a false belief" depending on the context.
Is it better to say "a wrong assumption" or "a bad assumption"?
Both "a wrong assumption" and "a bad assumption" are acceptable, but "a bad assumption" often implies that the assumption led to negative consequences or poor decisions. "A wrong assumption" simply indicates an inaccuracy.
What makes an assumption "a bad assumption"?
An assumption becomes "a bad assumption" when it's based on inaccurate information, flawed logic, or a lack of evidence, leading to undesirable outcomes or incorrect conclusions.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested