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>> No. 5128 Anonymous
14th August 2022
Sunday 8:21 pm
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Walter Lewin's physics lectures. They're some of the best lectures on physics.

8.01x - MIT Physics I: Classical Mechanics

8.02x - MIT Physics II: Electricity and Magnetism

8.03 - MIT Physics III: Vibrations and Waves

>> No. 5125 Anonymous
10th August 2022
Wednesday 3:15 pm
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Hypothetically speaking, would my pond goldfish survive if I released them into a little local freshwater river?
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>> No. 5126 Anonymous
10th August 2022
Wednesday 3:29 pm
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Goldfish are members of the cyprinidae family, which means they are cousins of carp and minnow. They are accustomed to low-oxygen environments like the bottom of a pond, so they should have no problem surviving in a river, as rivers are often much more oxygen rich. The only question is if your species can tolerate near-freezing temperatures in winter. Most goldfish can, but I think there are some tropical varieties that would struggle.

But yeah, as the Guardian says, it's probably a bad idea for other reasons.
>> No. 5127 Anonymous
10th August 2022
Wednesday 4:09 pm
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I won't be lectured on invasive species by a man with children.

>> No. 5124 Anonymous
20th June 2022
Monday 5:11 am
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are we living inside a giant black holes?

>> No. 5026 Anonymous
27th September 2021
Monday 12:16 pm
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Will we find lorry-drivers in space?
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>> No. 5118 Anonymous
14th April 2022
Thursday 6:07 pm
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If we can mine stuff out beyond Earth then what makes you think that they'll still be monotonous delivery jobs? At worst you'll be on the dole with a diamond shitter and gadgets that can only be made in space.

>that doesn't mean anyone other than about three giant companies has any realistic way to claim the resources it provides

Be definition falling launch costs reduces the cost of entry. It's not like we're going to run out of opportunities for mining.
>> No. 5120 Anonymous
14th April 2022
Thursday 7:00 pm
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>The sea is fucking massive too, relative to our planet. But that doesn't mean anyone other than about three giant companies has any realistic way to claim the resources it provides.

The whole thing hinges on incredibly cheap launch hardware. Metals are valuable, but they're also really fucking heavy. If the technology exists to mine asteroids profitably, then there will inevitably be a spaceship version of Apolloduck.

>> No. 5121 Anonymous
14th April 2022
Thursday 8:06 pm
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When I was a child, maybe 25 years ago, I had the brilliant idea to send rockets into space to collect space junk and bring it back. You could then make millions selling literal rubbish based on the fact that it had been in space, and that's so cool. If anyone fancies doing that, I'll be happy to let you in exchange for a mere 10% of the profits.
>> No. 5122 Anonymous
14th April 2022
Thursday 9:44 pm
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They won't have dole on the moon, it'll be outside of the jurisdiction of Earth governments and resemble a turn of the century company town, but with only one company, and no escape.

There might be some protections at first, with Earth governments still having some degree of responsibility to their ex-pats, but we'll see the full extent of what Amazon et al thinks of human life when the first generation of natural moon citizens are born.
>> No. 5123 Anonymous
14th April 2022
Thursday 10:33 pm
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and then you worked out the energy requirements to deorbit stuff without it burning up, and thought 'fuck it, I'll just sell random spacey looking shit from ebay and print certificates of orthentisity'
Where's my 10%?

>> No. 5099 Anonymous
21st March 2022
Monday 1:40 am
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What time do you like to have a poo? For some reason the early hours of the morning always suits me best and where my natural rhythm will return to, possibly because I can appreciate the calm silence offered at this time of night.
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>> No. 5100 Anonymous
21st March 2022
Monday 11:30 am
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When I wake up, before my morning shower. Showering immediately after shitting means I don't need to waste loo roll, I can just blast the cack off my bum with the high pressure setting on the shower.
>> No. 5101 Anonymous
21st March 2022
Monday 11:49 am
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I can't add anything produtive to the thread because I don't shit on schedule.

But am I the only one who can't hear the People's Postcode Lottery jingle without imagining it's a euphemism for either needing a dump, or getting buggered?
>> No. 5102 Anonymous
21st March 2022
Monday 3:18 pm
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About 11 o'clock.

I never used to shit on any schedule, it's actually very comforting to know that now I do.

I did once go a full week without pooing because I was on a road/camping trip with some mates and had a much more autistic rectum at the time. I had about three trips to the loo in the first hour of being home, and must have lost half a stone in solid turds.
>> No. 5103 Anonymous
21st March 2022
Monday 4:00 pm
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Did you do this in the beforetime? I've always felt uncomfortable about shitting in a busy toilet.
>> No. 5104 Anonymous
23rd March 2022
Wednesday 10:59 pm
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Before bedtime, once every three or four days.

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>> No. 5059 Anonymous
30th January 2022
Sunday 3:11 am
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>in a cage my garden i have some chickens and rabbits
>there are 72 heads and 200 feets in the cage
>how many chickens are there, and how many rabbits?
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>> No. 5094 Anonymous
15th February 2022
Tuesday 4:38 pm
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Which model year? What engine? What octane fuel? What are your tyre pressures? How many people, how much luggage in the car? Are your windows up or down? If down, how much? What direction is the wind, relative to your average direction of travel? What's the temperature outside? What's the temperature of your engine?
>> No. 5095 Anonymous
15th February 2022
Tuesday 5:27 pm
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Any will do.
>> No. 5096 Anonymous
15th February 2022
Tuesday 5:45 pm
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Fag packet maths:

A Ford Focus has a drag coefficient of about 0.3 and a frontal area of about 2.3m². This would mean an increase in aerodynamic drag of 14.7% by increasing from 70mph to 75mph. Frictional losses in the tyres and drivetrain will increase linearly by 7.1%. At these speeds aero drag dominates, so we'd expect a total increase in energy loss of slightly less than 14%.

If you're currently getting about 40mpg, an increase in fuel consumption of 14% would cost you about £1.50 on a 70 mile motorway trip.
>> No. 5097 Anonymous
15th February 2022
Tuesday 5:53 pm
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The rub here is gear ratios, I reckon.
>> No. 5098 Anonymous
15th February 2022
Tuesday 6:16 pm
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If you're cruising along in sixth, there won't be much difference in the thermodynamic efficiency of the engine.

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>> No. 4814 Anonymous
21st April 2020
Tuesday 7:24 pm
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Scientifically speaking, what's the best form of poo?
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>> No. 5046 Anonymous
15th November 2021
Monday 6:17 pm
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Dragon Dildo Den?
>> No. 5047 Anonymous
15th November 2021
Monday 6:17 pm
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I think he's right. Sometimes I find myself becoming randy when I need to take a piss or shit. It's like how you can wake up in the morning and masturbate but if you get up to pee first then you suddenly have others things on your mind.
>> No. 5048 Anonymous
15th November 2021
Monday 6:19 pm
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I think you both have prostate problems.
>> No. 5049 Anonymous
15th November 2021
Monday 6:21 pm
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On the contrary, our prostates are working exactly as nature intended. Yours must have something wrong with it if you don't get randy when you need a shit.
>> No. 5058 Anonymous
14th January 2022
Friday 10:07 am
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If someone has a near-death experience will they wake up to find that they've shit themselves or will they also have had a near-poo experience?

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>> No. 5051 Anonymous
23rd November 2021
Tuesday 7:37 pm
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>> No. 5052 Anonymous
23rd November 2021
Tuesday 9:54 pm
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>> No. 5053 Anonymous
25th November 2021
Thursday 12:21 pm
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so, uh .. why haven't we got Telsa power coils yet, powered by the earths electromagnetic field?
>> No. 5054 Anonymous
25th November 2021
Thursday 1:11 pm
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The earth's electromagnetic field is static and extremely weak. You could generate a tiny current by spinning a coil in that field, but you'd generate a far larger current by spinning a coil next to a big magnet. Spinning a coil next to a magnet (or spinning a magnet next to a coil) is how we make nearly all of our electricity; the problem is where you get the energy to do all that spinning.
>> No. 5055 Anonymous
27th November 2021
Saturday 2:15 am
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This channel alone does a great deal in explaining why, and what interaction everything in a system has with everything else.


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>> No. 5024 Anonymous
21st September 2021
Tuesday 11:43 pm
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Is it possible for an irrational number raised to the power of an irrational number to be a rational number?

Consider A = (sqrt2) ^ (sqrt2)

If A is rational then we have found an example.

If A is irrational then consider A ^ (sqrt2) = 2

Since 2 is rational we have now found an example.
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>> No. 5025 Anonymous
22nd September 2021
Wednesday 11:41 pm
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Not-P implies P, therefore, P.

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>> No. 5022 Anonymous
18th September 2021
Saturday 1:18 pm
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How can you take the square-root of a vector?
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>> No. 5023 Anonymous
18th September 2021
Saturday 1:19 pm
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Think about a simple 2d vector in cartesian coordinates.

We can represent it as a contravariant vector as in (1) or a covariant vector as in (2).

But what if we split it equally between the covariant and contravariant bases as in (3)?

Is there any use for this in quantum physics or something?

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>> No. 5014 Anonymous
6th September 2021
Monday 12:06 pm
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>> No. 5017 Anonymous
13th September 2021
Monday 1:00 pm
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Thankfully, the very first sentence in the video explains who its for: people who study physics. If you don't, it is irrelevant for you.
>> No. 5018 Anonymous
13th September 2021
Monday 1:03 pm
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Not sure how "Tood Terje - Inspector Norse" relates to physics studies, but okay, OP, you keep dreaming, big man.
>> No. 5019 Anonymous
13th September 2021
Monday 8:35 pm
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Sometimes the site code glitches out on phones and all of the videos get switched with other videos.
>> No. 5020 Anonymous
13th September 2021
Monday 9:07 pm
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You honestly think I don't know that? Did you really just say that to me? The fucking hubris.
>> No. 5021 Anonymous
14th September 2021
Tuesday 7:34 pm
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I'm still laughing at this post.

>> No. 4936 Anonymous
20th August 2021
Friday 6:13 pm
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>Elon Musk said he would probably launch a humanoid robot prototype next year dubbed the “Tesla Bot”, which is designed to do “boring, repetitious and dangerous” work.

>The billionaire chief executive of the electric carmaker Tesla said the robot, which would be about 5ft 8in (1.7m) tall and weigh 125 pounds (56kg), would be able to handle tasks such as attaching bolts to cars with a spanner or picking up groceries at stores. Speaking at Tesla’s AI Day event, Musk said the robot could have “profound implications for the economy” by plugging gaps in the workforce created by labour shortages. He said it was important that the new machine was not “super expensive”.

>He described it as an extension of Tesla’s work on self-driving cars, and the robot would use the same computer chip and navigation system with eight cameras. But Musk gave no indication of having made concrete progress on actually building such a machine. At the point when a normal tech launch might feature a demonstration of a prototype model, the South African entrepreneur instead brought out an actor in a bodysuit, who proceeded to breakdance to a soundtrack of electronic dance music.

>Companies on the cutting edge of robotics, such as former Google subsidiary Boston Dynamics, have produced bipedal robots. But the clunky, heavy machines they have demonstrated bear little resemblance to the svelte designs Musk claimed Tesla could build. The announcement by Musk, who has a penchant for hyping new product launches, comes amid an investigation into the safety of Tesla’s full self-driving software.

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>> No. 5007 Anonymous
22nd August 2021
Sunday 6:24 pm
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>A lot of people are going to find that none of their skills can match those of an intelligent machine that will also work 24/7 for no money.

The important part that needs a lot more emphasis is that will work 24/7 for no money.

In the eyes of big business, that makes up for almost any reduction in the quality of work. It doesn't matter if the robot pizza boys run over a dozen people every week, Papa John is probably still coming out better off because he no longer has to pay real any delivery drivers.

Most of you are already familiar with the way your bosses would rather force more work onto already overloaded teams and "streamline" their processes or whatever shite, regardless of the consequences it has. You can see with your own eyes it's barely staying upright but from a management perspective, the costs are saved, the profits go up, therefore it's a 100% success. Automation will be much like that.
>> No. 5008 Anonymous
22nd August 2021
Sunday 9:50 pm
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>The AIs we're building and looking to deploy in the workplace think distinctly different to people because the demand is in different tasks

Nobody cares about "thinking differently" or "complementary skills", they just have a business objective that needs to be satisfied - lowering costs, increasing productivity or both. Modern AIs aren't programmed but trained - we give them example inputs and outputs and the algorithm figures out how to get from one to the other.

Automation won't replace all jobs any time soon, but it's aggressively eroding the middle of the labour market. Robots struggle with varied tasks in organic environments (cleaning, waiting tables etc), they struggle with very complex creative and intellectual tasks, but everything in the middle is ripe for automation.

>This is daft, we know how to avoid economic disruption with retraining, education and nudging people into the right careers etc.

Except we don't. One in five British adults lack the literacy and/or numeracy skills expected of an eleven-year-old, a figure that has remained stubbornly high for decades. It's a cruel delusion to imagine that everyone could be a robotics engineer or a cardiac surgeon if they just put their mind to it. Some people just aren't very bright. It's not their fault, it doesn't make them bad people, but they couldn't scrape together five GCSEs to save their life.

We saw the failure of this ambition during the Blair years. We radically increased the number of people who went to university, but the number of jobs that actually require degree-level training barely changed. We thought we were upskilling the economy, but we were really just creating make-work for junior lecturers and university administrators and lumping young people with the cost.

Wages haven't gone up since 2008 because per-worker productivity hasn't gone up. An increasing share of profits goes to capital rather than labour because an increasing share of productivity is generated by capital rather than labour. The threat of automation isn't hypothetical, it's happening as we speak, we're just pasting over the cracks and hoping for the best.
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>> No. 5009 Anonymous
22nd August 2021
Sunday 9:51 pm
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The machine-tending robot arm I showed in a previous post is a clear example of this. It's objectively worse than a human operator; it's slower at actually loading the machine, it doesn't know what to do if something gets clogged up with swarf, it can't do odd jobs around the workshop etc. None of that matters, because it does the work of three-and-a-bit full time employees and pays for itself in a matter of months.

Self-checkout machines in supermarkets are annoying for customers and increase theft, but the economics of replacing eight employees with one employee and eight machines is utterly compelling. Robots don't have to be better than you to take your job, they just need to be acceptable as a cheap-and-cheerful substitute.
>> No. 5010 Anonymous
22nd August 2021
Sunday 11:14 pm
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I submit that back when forklifts were a new thing, trade unions still mattered so the workers who weren't made redundant (not a huge problem because full employment was government policy) got a large pay increase due to their increased productivity. That increased pay then ran through the tax system, so the overall result was no real change if you look at things as a distribution between capital owners and labour. (including the unemployed as "labour")
Now in the shiny new progressive 2020s, where Trade Unions aren't allowed more than 3 people lurking around outside and they can have their car doors confiscated if they look at you the wrong way, there's no need for passing on productivity gains. Just keep paying the guy who makes sure the robot doesn't trip over the extension cord whatever he was being paid before and fire the rest, then pass the gain onto shareholders, the most important people in the world. Don't weep for the unemployed, the DWP will have them programming the next angry birds or get them to take an innovative new job on an app where people pay them to pretend to be their friends or some other exciting innovation in boring dysopia.

A little anecdote I quite like: Economists used to think that it was "one of the most surprising, yet best-established facts in the whole range of economic statistics" that the share of the national income that went on wages was pretty constant. Varying up and down a bit as the economy itself does, but basically steady. Then a funny thing happened across the developed world starting in the 1980s: it began to fall. As an equal and opposite reaction, the share going to capital owners increased. How very odd. I'm not even really attributing 100% of that to unions, it's just that the union's biggest political disadvantage - that it was visible - also makes it the easiest one to point to. This post is overwritten enough as it is without pointing at other things too.
>> No. 5012 Anonymous
23rd August 2021
Monday 12:09 am
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Also there's a huge microeconomic difference between a forklift and a robot arm. A forklift increases the productivity of a skilled worker, granting them more economic bargaining power; a robot arm replaces a worker entirely, greatly reducing the bargaining power of whichever unskilled worker it replaced.

This the crucial difference between mechanisation and automation that a lot of people overlook. In the 1970s, printing was heavily mechanised, which made skilled printers highly productive workers with a lot of bargaining power - the printing machinery needed constant skilled intervention and everything ground to a halt if the printers walked out, but they were capable of producing huge quantities of newspapers. In the 80s (starting with Wapping), printing became automated. The new automated machines didn't need printers with specialised skills to operate them, only electricians and mechanics to maintain them. Without effective bargaining power, the protests by the printing unions were futile.

Mechanisation can benefit both labour and capital, but automation benefits only capital because it replaces rather than augments the productivity of labour.

>> No. 4929 Anonymous
23rd July 2021
Friday 4:18 pm
4929 BODMAS, PEDMAS whatever
Can I get a discussion here? I was never taught order of operations, not at primary school, not at secondary, not when I did A-level maths, not even when I spent 5+ years at an engineering design company doing beam and wind loadings.

But I see it all the time with the yanks wanking over the idea of people misinterpreting a poorly structured equation. And scoffing at any who dared not know about it.

Anyone else in the same boat as me?
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>> No. 4931 Anonymous
23rd July 2021
Friday 5:37 pm
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We already had this discussion here a few weeks ago.

if you do what you were told in school you follow bodmas which means you multiply and divide before addition and subtraction, but in the real word people who do maths for a living always write out equations in a way that the order or operations is obvious. (And if you write formulae in excel you just use brackets absolutely fucking everywhere so nothing is left to chance)
>> No. 4932 Anonymous
23rd July 2021
Friday 5:42 pm
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November was more than a few weeks ago.
>> No. 4933 Anonymous
23rd July 2021
Friday 5:44 pm
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Time travels more slowly in /science/ lad.
>> No. 4934 Anonymous
23rd July 2021
Friday 5:44 pm
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* /lab/ lad
>> No. 4935 Anonymous
23rd July 2021
Friday 6:27 pm
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I like drawing up tables of video game data and using Excel to try strategies based on the numbers. Essentially playing the game without any of the fun. But I am deeply wrong so you're spot on.

>> No. 4921 Anonymous
15th June 2021
Tuesday 2:16 pm
4921 It has come to my attention
That civet-poop coffee isn't the only poop coffee, for some reason there's elephant-poop coffee too. It's even more expensive.

I can't believe the digestive system of an elephant is more similar to a civet's than a human's is. So this raises the question, would human-poop coffee have the same alleged properties?

Can we market Gamer Girl Poop coffee? This whole concept is basically the same as cigars being sold on the basis that they were "rolled on the thigh of a dusky maiden".
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>> No. 4924 Anonymous
15th June 2021
Tuesday 5:10 pm
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What has humanity become?
>> No. 4925 Anonymous
15th June 2021
Tuesday 7:14 pm
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Sexy, in an array of extremely specific ways.
>> No. 4926 Anonymous
15th June 2021
Tuesday 8:03 pm
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I see it has already been endorsed by Hitomi Tanaka.
>> No. 4927 Anonymous
16th June 2021
Wednesday 1:06 am
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I for one look forward to the new normal of twitch thots incorporating shitting coffee beans into their 100 new subs squat routine.

And how the rules will bend to treat this as if it was always fine.
>> No. 4928 Anonymous
16th June 2021
Wednesday 4:00 am
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