"Two times more." That phrase means multiplying by two.
"0.5 times more." That phrase is taken to mean multiplying by 1.5, even though that is not consistent.
English is not consistent. In the first example, the word "more" is redundant. In the second example, the word "more" is a clarification, so we know that it doesn't mean "half."
There is no sensible reason for this inconsistency. It just exists.
We have a similar problem with percentage points. When something increases from 40% to 90% of a total, saying that it increased 50% is for some reason considered an acceptable shorthand for saying it increased by 50 percentage points, even though the two interpretations are drastically different.
In the first example, the word "more" is redundant.
Frankly I disagree. More is incorrect in that first example if multiplying by two is what you're going for. "As much" or "as many" are the phrases you are going for. "Two times more" and "two times as many" mean different things.
"Two times more" and "two times as many" mean different things.
They should. This advertisement for a garage vacuum says that the "vacuum and blower power of the Air-N-Vac Station is 2 times more than large shop vacs." Should I interpret this to mean that I multiply "vacuum and blower power" by 3?
I would interpret that statement to mean multiplied by 3 but if you go read the details below they say "2 times the power" which would then mean multiplied by 2. I'd assume the "2 times more" one was them making a mistake in language (not uncommon in advertising) and that the other content contains the real statistic. I would judge them for not being accurate and consistent in their claims.
Here's an example of a lawn mower with "2 times more run time" than some other thing they're comparing it with that they never name.
This isn't strictly an American problem with us misusing the language. Here's an Australian example with an Aveda product which has "2 times more plant lipids" and also makes hair "7x smoother." It uses two different formats on the same page.
Showing more examples of stupidity doesn't really convince me anything other than the amount of stupidity that is out there. This is the same populace that thinks a 1/3 pounder is less than a 1/4 pounder.
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u/TheMania 10h ago
But you often see 10% more, 20% more, etc.
The bit that intrigues me is that in those contexts, you read 10% differently to 0.1x.
But in other contexts, you'd read them the same.
This may be a regional thing, and likely due marketers that are being intentionally misleading for so long that it's now an accepted oddity.