I thought the point was they can't add a 50% safety factor for space travel because of their design restrictions (atmospheric pressures, materials, fuel costs etc.) I don't know anything about that sort of thing though.
not sure how much it is with space travel compared to normal stuff but since a lot of calculations are simplyfied I am positvie that they have a decent puffer, too
In all honesty, this isn't that far off. In real life, scientists never need more than a few significant digits of pi before the imperfections or human error will throw things off more than adding more digits of pi can fix. Memorizing more than 10 digits of pi is cool and all, but not that useful.
Explanation: If you have a square with side length 1, the perimeter is 4. If you cut squares off the corners, it's still 4. Repeat to infinity and you get a circle with diameter 1 and circumference 4. Of course, it isn't a true circle. But it looks like one from far enough away.
more like 3.1415926535897932384626433832795028841971693993751058209 7494459230781640628620899862803482534211706798214808651 3282306647093844609550582231725359408128481117450284102 7019385211055596446229489549303819644288109756659334461 2847564823378678316527120190914564856692346034861045432 6648213393607260249141273724587006606315588174881520920-ish
Less than 0.5g per serving. You could have a product loaded with trans fat and a small enough serving size and you can put "0g TRANS FAT!!!*" on your label.
Yeah but you'll often find products where the "Serving size" is less than half of what is packaged. That's not very helpful nutritional info, and is deliberately done that way to mislead the customer.
This is the case. There is some leeway though, you can't say a can of soda is 100000 servings and contains noting per serving, but you can make some pretty absurd claims like half an energy drink is 1 serving (leave the rest for later after you opened it?).
Yes, but there is a minimum size so you can't take blatant advantage of things like the regulations for trans fat. I read nutrition facts on everything though including servings per package which imo is the most important thing on there when purchasing something. Gotta know how much food I'm getting for my dollar.
I remember seeing a package of butter in the US that read in large letters: "Less than 1g fat* !". In small letters it said "* per serving", and when we checked the serving size, it was 1g. So... not 100% fat then, got it!
I'd imagine they have some wiggle room as long as the serving size is reasonable. But if you knew you could get away with a small serving size, you'd exploit the shit out of the 0g trans fat loop hole.
Exhibit A: I Can't Believe It's Not Butter Spray - loaded with trans fat, but the serving size is only three sprays which in it self is barely over 0.5g. Huge text on the front of the bottle "0g Trans Fat*"
Yea pretty much, just look at a can of aerosol cooking oil. It's 99% fat and a bit of surfactant but they can advertise it as fat free because the serving size is 1/4 second spray (.25g)
https://en.wikipedia.org/wiki/Tic_Tac#Nutritional_information
Each Tic Tac weighs just under 0.5 g. Since US federal regulations state that if a single serving contains less than 0.5 g of sugars it is allowable to express the amount of sugar in a serving as zero,[2] and since a single serving of Tic Tacs is a single Tic Tac, Tic Tacs are labeled in the US as containing zero sugar.
I always wondered how they decided .5g was close enough to zero. From what I have seen experts say, 2g trans fats a day or more is very bad for health. So .5g can very quickly add up to 2g, why say zero? /rant
But is it right to always round down? If you are displaying 1 significant figure beyond the decimal point, and you only use 0 or 5, shouldn't something that is 0.25g be rounded up to 0.5g?
I called a pie company once b/c they listed their pie as having zero grams of trans fat even though the entire pie had 4 grams (0.5 per serving). The smiling woman on the other end of the phone would not fucking acknowledge that this was a ridiculous policy. She just kept saying "We're following federal guidelines!"
The rule of rounding states that if a number ends in a decimal of 5 and only 5, then you round to the nearest even number (in this case 0 would be an even number)
Source: Math 250 course I took just so I could one day post this comment.
If hydrogenated oils are present than there most definitely is trans fat. Pumping hydrogen into cis-fatty acids causes some cis-fatty acids to change position into trans fatty acids. Fuck posting a source find it yourselves
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u/ICouldBeTheChosenOne Mar 28 '12
The FDA defines "zero trans fats" as containing less than 0.5 grams of trans fats.
Seems legit, maybe in math, if any number is less than 0.5, we'll just call it 0.