Jesus fucking christ.
Only with a condom apparently.
This is a strange case. I think it's pretty clear what's meant (the inverse of five times higher?) but the phrase itself is arithmetically meaningless. Does "a fivefold decrease" make sense?
If you move from the US to the Netherlands you'll see a 80% drop in teen pregnancy rates, but if you move in the other direction you'll see a 5-fold increase. If you keep moving back and forth eventually everyone will be pregnant.
2: Since your parenthetical explanation is to my mind exactly what is meant by the phrase, both in intent and in reception, I'm not sure it's arithmetically meaningless, anymore at least.
Or put another way, division is often introduced as the inverse of multiplication - six taken two times is twelve, six taken one-half times is three - so it seems reasonable to similarly invert a phrase normally used for multiplication.
2: I like "fivefold decrease", as if the quantity is being folded up.
Anyway, I think this is somewhat natural language. We say "five times more". Does the "more" mean anything, or is it just redundant? It's reasonable to reanalyse it as meaningful, and "less" or "lower" typechecks with "more".
Pedigreed!
Though commerce was still very low, it seems rather to have encreased since the conquest; at least, if we may judge of the increase of money by the price of corn. The medium between the highest and lowest prices of wheat assigned by the statute, is fourteen shillings and ten-pence halfpenny of our present money. This is about one-third of the price in our time, yet the middling price of cattle, so late as the reign of the king Richard, we find to be above eight, near ten times lower than the present.
(The History of England, Oliver Goldsmith, 1794)
The proposed railway is to pass through Romford, Chelmsford, Colchester, Ipswitch, and Norwich, and terminate at Yarmouth. From the very level nature of the country--the most level, indeed, of the same extent in Great Britain--the highest summitt level will be seven times lower than the highest summit level of the Southampton railways, and eight times lower than that of the Birmingham...
(Mechanics' Magazine, Museum, Register, Journal, and Gazette, August 16, 1834)
Just say "one fifth" like a normal person.
And "x-tuple" in preference to "x times higher"?
11: Sure, to decimonormativists. Moby, othering the otherwise digitialed since 2015.
"n-fold" confuses me, because it seems like it should be an geometric series: one fold is half, two folds is a quarter, etc. Even if you took a piece of paper and folded it n times such that all of the unfolded areas were equal in size, you'd have n+1 such areas (i.e., four folds gets you sub-parts that are one-fifth the size of the original). Blech.
4: I think it's meaningful natural language, but what I meant by "arithmetically meaning" is you could fairly directly transliterate into some formula: "five times more" = "y = 5x", "half again as much" = "y = 1.5x", "five times less" = ... "5y = x", I guess?
I'm sure there's something in Grothendieck's writings that would explain all this.
I thought "this sentence annoys me" referred to how badly the fact in it reflected on the US, not the construction of it. Clearly I should have known better.
We have the pregnantest teens ever.
In science we see the phrase "fold change" all the time, and like some people above I could not wrap my head around why this referred to simply multiplying the number by some number. Until I realized... it's just simply the English suffix "-fold", as in "fivefold", "tenfold", etc. Oh!
I don't understand the OP or this thread at all. Do I not speak the same language as the rest of you?
Mathematicians seem to have strong opinions about how people should talk about numbers.
23: Just talk with somebody Dutch before you have sex.
22: "Two log reduction" is even less intuitive, if we're picking on science.
In a cook book, talking about a "two log reduction" might be confusing.
"Fold change" and "two log reduction" sound ungrammatical or at least unidiomatic to me. Is this a biologist thing?
How about "two e-folds smaller"?
In science we don't say "fold", and we use Latex. Grothendieck taught us these things. (Though I don't think Grothendieck used Latex. My impression was that he typed everything out on an IBM Selectric.)
I learned how to type on an IBM Selectric. I could do 80 words a minute in a timed test.
Anyway, we never say "log reduction". We just write the odds ratios or whatever.
We know our variables are statistically significant because the Bible tells us so.
Jesus loved the little variables, all the variables of the world
Doubt and fear and things of Earth in vain to me are calling
Big A, little a, bouncing b, cat's in the cupboard, but he can't catch me!
I'm made of five times less asteriskstuff than a typical bull.
Though I don't think Grothendieck used Latex.
No condom joke yet? This thread is fivefold less juvenile then I expected.
18: I thought the same thing (though "annoyed" seemed too mild).
41: Folded five times for enhanced pleasure.
41: Grothendieck did have 5 kids.
But not in a way we'd understand.
The other day in the park, Iris and I were wrestling a bit, and I ended up spinning her around. She yelled at me and got a little mad. Then, a bit later, she asked me to pick her up and let her flip back (something she's done since she was little). I pointed out that she'd been mad before, and she retorted that she hadn't "consented" to the previous spinning. I don't know what combination of instruction got that into her, but I praised it highly.
5: ... six taken two times is twelve, six taken one-half times is three ...
It's twelve only if six is fertile both times it is taken, and both pregnancies are carried to term.
I don't understand how six can be taken one-half times. This seems similar to being a little bit pregnant.
And then there's the American Girls branded body book (or title to that effect), which seems tolerably progressive until it has the diagram of the vulva that shows, but doesn't label, the clitoris. For crying out loud.
50: Really? Ugh. I bought that one because it was well-recommended and didn't bother actually reading it yet. I suppose I can annotate.
God, I love feeling superior to those benighted red states.
Yeah, congrats on your kids learning consent in the same amount of time other kids can learn calculus. Bunch of little raplings you have running around out there.
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For a man who lives off his wife's income, however, there is a 15% chance that he will have an affair...In the paper, she argues that men who are not earning money may feel emasculated and that taking on an extramarital affair may make them feel more manly and desirable.
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50-51: It's meant to be an activity to test their knowledge, like pin the tail on the donkey.
53: Maybe they just have more time and opportunity.
They're better looking, because they have time to work out more?
Maybe they were better looking to start with and that's how they got a wife who could support them.
The male lion strategy: "Isn't this the most regal, dignified mane you've ever seen on a predator? Now go catch me an antelope."
They're more pitiable, because they've had cancer?
Women are attracted to the odor of chlorine?
Home, home on the range.
Where the dear with the antelope play.
I can see the evolutionary advantage, the smell of chlorine suggests you have fewer parasites on you.
Where seldom is heard, a discouraging word
from the yoga instructor down the way.
log reduction is a euphemism for a botched circumcision.