[RDTM] Could Ant Man pierce the flesh of a human body
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-im-your-huckleberry's comment on "What's the stupidest thing you've ever seen in a movie?"
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What is Wheelchair Rick’s top speed while hill-bombing in his wheelchair. 🇨🇦 [request]
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[Request] This guy claims his aluminum helmet has been pierced by Starlink satellites. How much energy would that require?
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SELF Update: Kellogg's has doubled down!!!
For those not following - I sent Kellogg's a letter a few months back pushing back on their donut hole glaze claims. They responded to me and basically just said "Thanks for the feedback" and sent me a manufactures coupon. Here is the link to the original post which includes the letter I sent them as well as the updates: https://www.reddit.com/r/theydidthemath/s/Nw8nTo805e
This morning I awoke to an additional response!
>Nathan,
>Thank you for your recent email, we appreciate your question regarding Kellogg's Frosted Flakes Glazed Donut Holes cereal and the packaging more glaze math claim.
>As we considered the shape of our cereal, the sphere is the most efficient mass to surface area shape. For a given cereal piece, when holding the glaze percentage constant, both the sphere and loop deliver the same glazing mass and cereal mass. The sphere itself has less surface area than a loop for the same cereal mass and porosity. When applying the glazing mass to the cereal mass, the sphere will have a thicker glazing mass application layer due to the limited surface area in comparison to the loop. That thicker glazing layer delivers MORE visible coating (glaze) on the sphere than what would result in applying the same amount to the loop shape.
>Ultimately, in order to achieve the desired cereal appearance, the coating on the loop would need to be approximately double that of the sphere. In holding the glaze percentage constant for given cereal pieces of equal mass and porosity, the sphere delivers more glaze than any other shape.
>We hope this answers your question and appreciate your interest and loyalty in our brands.
>So we can send you some free product coupons. Please reply to this email with your mailing address and we will get those sent to you right away.
>Thank you again, Nathan, for sharing your feedback. I'll make sure your comments are shared with our Packaging team.
>All the best,
>Connie
WK Kellogg Co Consumer Affairs
I promptly replied with the following:
>Connie,
>Thank you for the thoughtful reply - and for the generous offer of coupons (which I gratefully accept). However, I must admit I remain troubled and unconvinced.
>Your response is, frankly, a fascinating pivot - not a defense of surface area, which was the mathematical basis of your original claim, but rather a shift toward thickness of glaze per unit area. This is not a small clarification; it’s a full relocation of the goalpost. The box claimed that donut holes “deliver more glaze,” not that they look like they do because the same amount of glaze is concentrated into a smaller surface.
>But as any engineer - or hungry child - can tell you, “looks like more” ≠ “more.” If I give my 8-year-old daughter a brownie, cut it in half, and stack the pieces, I haven’t “delivered” more brownie. I’ve delivered the same brownie in a new shape. She sees through that. So do I.
>What makes this more perplexing is that the original claim was accompanied by equations (one of which was mathematically incorrect) that emphasized surface area \- not optical illusions. It was math-forward marketing, and now that the math has been exposed, it’s being reinterpreted as an aesthetic preference. If the goal is indeed simply to make the glaze appear thicker without increasing the amount, I humbly suggest a revised packaging claim:
>"Donut holes are the perfect shape to look like you're getting more glaze - even when it’s the same amount"
>Moreover, how can one even guarantee this “thicker glaze layer”? Unless each cereal piece is hand-glazed like a fine pastry (which I assume it is not), the idea that spheres consistently receive a thicker coating seems... optimistic. If the mass and porosity are the same, why would glaze magically cling thicker to a sphere? Are they being double-dunked?
>I appreciate the reply - and the coupons. But let the record show: no amount of sugar can sweeten a flawed equation.
>Yours in pastry
For those not following - I sent Kellogg's a letter a few months back pushing back on their donut hole glaze claims. They responded to me and basically just said "Thanks for the feedback" and sent me a manufactures coupon. Here is the link to the original post which includes the letter I sent them as well as the updates: https://www.reddit.com/r/theydidthemath/s/Nw8nTo805e
This morning I awoke to an additional response!
>Nathan,
>Thank you for your recent email, we appreciate your question regarding Kellogg's Frosted Flakes Glazed Donut Holes cereal and the packaging more glaze math claim.
>As we considered the shape of our cereal, the sphere is the most efficient mass to surface area shape. For a given cereal piece, when holding the glaze percentage constant, both the sphere and loop deliver the same glazing mass and cereal mass. The sphere itself has less surface area than a loop for the same cereal mass and porosity. When applying the glazing mass to the cereal mass, the sphere will have a thicker glazing mass application layer due to the limited surface area in comparison to the loop. That thicker glazing layer delivers MORE visible coating (glaze) on the sphere than what would result in applying the same amount to the loop shape.
>Ultimately, in order to achieve the desired cereal appearance, the coating on the loop would need to be approximately double that of the sphere. In holding the glaze percentage constant for given cereal pieces of equal mass and porosity, the sphere delivers more glaze than any other shape.
>We hope this answers your question and appreciate your interest and loyalty in our brands.
>So we can send you some free product coupons. Please reply to this email with your mailing address and we will get those sent to you right away.
>Thank you again, Nathan, for sharing your feedback. I'll make sure your comments are shared with our Packaging team.
>All the best,
>Connie
WK Kellogg Co Consumer Affairs
I promptly replied with the following:
>Connie,
>Thank you for the thoughtful reply - and for the generous offer of coupons (which I gratefully accept). However, I must admit I remain troubled and unconvinced.
>Your response is, frankly, a fascinating pivot - not a defense of surface area, which was the mathematical basis of your original claim, but rather a shift toward thickness of glaze per unit area. This is not a small clarification; it’s a full relocation of the goalpost. The box claimed that donut holes “deliver more glaze,” not that they look like they do because the same amount of glaze is concentrated into a smaller surface.
>But as any engineer - or hungry child - can tell you, “looks like more” ≠ “more.” If I give my 8-year-old daughter a brownie, cut it in half, and stack the pieces, I haven’t “delivered” more brownie. I’ve delivered the same brownie in a new shape. She sees through that. So do I.
>What makes this more perplexing is that the original claim was accompanied by equations (one of which was mathematically incorrect) that emphasized surface area \- not optical illusions. It was math-forward marketing, and now that the math has been exposed, it’s being reinterpreted as an aesthetic preference. If the goal is indeed simply to make the glaze appear thicker without increasing the amount, I humbly suggest a revised packaging claim:
>"Donut holes are the perfect shape to look like you're getting more glaze - even when it’s the same amount"
>Moreover, how can one even guarantee this “thicker glaze layer”? Unless each cereal piece is hand-glazed like a fine pastry (which I assume it is not), the idea that spheres consistently receive a thicker coating seems... optimistic. If the mass and porosity are the same, why would glaze magically cling thicker to a sphere? Are they being double-dunked?
>I appreciate the reply - and the coupons. But let the record show: no amount of sugar can sweeten a flawed equation.
>Yours in pastry
Reddit
From the theydidthemath community on Reddit: [SELF] Kellogg's Mathematical Blunder
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[Request] if the fly was human sized, how big would the salt grains be?
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Request Heating a pool unconventionally
My aunt has an above ground pool approximately 12 feet in diameter, and about 5 feet deep. She has a heater for it, but never turns it on due to electricity costs, so I have been trying to find a way to heat it "free."
I remembered an article I read a while back about heating some water reservoir with these black balls on a string, pulling light from the sun to heat the water more directly.
For purposes of sun exposure and such, we live in southern Pennsylvania.
It looks like a pack of 50 "ball pit" balls are about twenty bucks on Amazon. If I were to get these and toss them in a (hopefully black) mesh laundry sack, I should have a viable item to toss into her pool, attract some sun, and heat the water.
How much of a temperature difference would one of these 50-ball heaters provide? Would this progress linearly (such that, if one pack provides a temperature increase of X, 2 packs would provide 2x, and 5 packs would provide 5x, so long as packs did not begin to overlap the visible surface area)?
thanks for reading, and any help you can provide.
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@TheyDidTheMath
My aunt has an above ground pool approximately 12 feet in diameter, and about 5 feet deep. She has a heater for it, but never turns it on due to electricity costs, so I have been trying to find a way to heat it "free."
I remembered an article I read a while back about heating some water reservoir with these black balls on a string, pulling light from the sun to heat the water more directly.
For purposes of sun exposure and such, we live in southern Pennsylvania.
It looks like a pack of 50 "ball pit" balls are about twenty bucks on Amazon. If I were to get these and toss them in a (hopefully black) mesh laundry sack, I should have a viable item to toss into her pool, attract some sun, and heat the water.
How much of a temperature difference would one of these 50-ball heaters provide? Would this progress linearly (such that, if one pack provides a temperature increase of X, 2 packs would provide 2x, and 5 packs would provide 5x, so long as packs did not begin to overlap the visible surface area)?
thanks for reading, and any help you can provide.
https://redd.it/1l9zn7l
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[Request] compare the energy stored in the spring to a 400Wh ebike battery
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Request How cold the air has to be so that using a handheld fan doesn’t make you hotter?
Assuming it’s a hot day in summer and there is no wind, and you are sitting in the shadow, how cold (or how much colder than the body?) the temperature of the air has to be so that the energy used and movement required by the body to use a handheld fan doesn’t actually make you hotter (even if it feels better initially)?
I understand assumptions have to be made to the fan size and person strength, among others? Is there an ideal approach? E.g., a larg-ish fan moved slowly without significant effort?
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@TheyDidTheMath
Assuming it’s a hot day in summer and there is no wind, and you are sitting in the shadow, how cold (or how much colder than the body?) the temperature of the air has to be so that the energy used and movement required by the body to use a handheld fan doesn’t actually make you hotter (even if it feels better initially)?
I understand assumptions have to be made to the fan size and person strength, among others? Is there an ideal approach? E.g., a larg-ish fan moved slowly without significant effort?
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Request How much ROI ($) does Google get for paying Apple to be the default search engine on Apple devices?
Some estimates say that Apple devices generate $20-$30 billion in earnings on top of $20 billion that Google spends to have it remain as the default search engine on Apple devices, but I haven’t found anything material to confirm this.
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@TheyDidTheMath
Some estimates say that Apple devices generate $20-$30 billion in earnings on top of $20 billion that Google spends to have it remain as the default search engine on Apple devices, but I haven’t found anything material to confirm this.
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Request How much milk chocolate (in g or 100 g bars) do I need to eat per day for it to be unhealthier than a daily pack of cigarettes (20 cigs)
I had a discussion with a patient yesterday about her nicotine addiction and along with the usual "I'm not addicted" (yes you are), "we're all going to die eventually" (there are better ways to die than cancer and stroke though), "your colleague said my arteries look pristine" (no he didn't, he said your carotid was surprisingly clean compared to your sclerotic abdominal artery) "and I could keep smoking" (he most certainly did not say that) she said "cigarettes are my chocolate, some eat chocolate and I smoke".
That caught me a bit of guard and now I wonder how much chocolate you'd have to eat per day to get to the same level of damage as smoking cigarettes. Loss of life expectancy might be a good measurement since the actual consequences are very different, but do as you please.
Bonus points if you can tell me how it scales - if half the amount of chocolate does the same kind of damage as half the number of cigarettes - I suspect it doesn't.
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I had a discussion with a patient yesterday about her nicotine addiction and along with the usual "I'm not addicted" (yes you are), "we're all going to die eventually" (there are better ways to die than cancer and stroke though), "your colleague said my arteries look pristine" (no he didn't, he said your carotid was surprisingly clean compared to your sclerotic abdominal artery) "and I could keep smoking" (he most certainly did not say that) she said "cigarettes are my chocolate, some eat chocolate and I smoke".
That caught me a bit of guard and now I wonder how much chocolate you'd have to eat per day to get to the same level of damage as smoking cigarettes. Loss of life expectancy might be a good measurement since the actual consequences are very different, but do as you please.
Bonus points if you can tell me how it scales - if half the amount of chocolate does the same kind of damage as half the number of cigarettes - I suspect it doesn't.
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[Request] Why would he sink the further went down in water? Isn't that against buoyancy laws?
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[Request] The Hercules Globular Cluster is estimated to have 300,000 stars. How was that number calculated?
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Request Flat Earth Math
For the purposes of my question I am going to pretend to be a flat earther, Ill blame my conversion on a an accident at the teddy bear factory that has resulted in 80% of my cranial matter being replaced with doll stuffing.
When I step outside and look at the sky it appears that from my point of view I am standing underneath a large dome. From my point of view it looks like I am exactly under the center of this dome. I live in Ohio. The furthest west of Ohio that I have ever been is the west coast of the united states. According to Google maps the furthest point I have been to is 2033 miles from where I am now. The furthest east I have been from Ohio is Greece. Google maps shows that distance as 5510 miles. 7543 miles seperate the 2 furthest points (google says that if I went directly from the west coast to Greece it would only be 6416 miles but that is obviously globist nonsense)
When I stand on the west coast of the U.S. I still seem to be directly under the center of the dome. When I stand in Greece and look up I am still directly under the center of the dome. Now, I am not good at math, but it seems to me like this should be enough information to figure out how big the dome over flat earth is. Or if not how big exactly at least enough to figure out the minimum size of the dome.
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@TheyDidTheMath
For the purposes of my question I am going to pretend to be a flat earther, Ill blame my conversion on a an accident at the teddy bear factory that has resulted in 80% of my cranial matter being replaced with doll stuffing.
When I step outside and look at the sky it appears that from my point of view I am standing underneath a large dome. From my point of view it looks like I am exactly under the center of this dome. I live in Ohio. The furthest west of Ohio that I have ever been is the west coast of the united states. According to Google maps the furthest point I have been to is 2033 miles from where I am now. The furthest east I have been from Ohio is Greece. Google maps shows that distance as 5510 miles. 7543 miles seperate the 2 furthest points (google says that if I went directly from the west coast to Greece it would only be 6416 miles but that is obviously globist nonsense)
When I stand on the west coast of the U.S. I still seem to be directly under the center of the dome. When I stand in Greece and look up I am still directly under the center of the dome. Now, I am not good at math, but it seems to me like this should be enough information to figure out how big the dome over flat earth is. Or if not how big exactly at least enough to figure out the minimum size of the dome.
https://redd.it/1lak55p
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This sub got part of this wrong yesterday. The triangle is not always worse than the square. [Self]
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[Request] What volume or weight would the supercomputer required for such an AI system have?
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[Request] How long would one person with a shovel need, if they work 8 hours per day, 7 days a week?
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Could anyone tell me roughly how much energy one impact is transferring into the wrench? [Request]
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