If the Earth were actually flat, Flat Earthers would believe it’s a globe.

So basically, 200 "proofs" are nothing more than 40 lies phrased differently.

Everything is a conspiracy when you don't know how anything works.

Fun fact: Eric once made a rap song in which he denied the holocaust and praised Hitler

1924: in 100 years, we’ll have flying cars! 2024: explaining to grown men that oceans don’t have wings

new flat earth content is always a ball

I think we need a new word because describing Eric Dubey as a moron is unfair to other morons everywhere.

Flat earth debunk videos are a great place to learn astronomy, physics, meteorology, etc.

"Trains can't handle curvature"...Switzerland: "Hold my beer"

Prof. Dave trashing flat earthers = Infinite joy

This Eric guy is really lucky that breathing happens automatically. If he had to think about it, he would be dead.

Flat earth fails on every point. The geocentric flat earth has... • No working model, or map. • No way to determine proper distances, or directions between two point on the earth not sharing the same longitude. • No explanation for how the sun and the moon circle the earth, or how the sun migrates from the tropic of Capricorn to the tropic of Cancer and back over the year. • No idea why the ancient Greeks such as Pythagoras, Aristotle, Eratosthenes and Aristarchus believed the earth was a sphere. • No idea what P and S shockwaves detected by seismology equipment tells us about the internal structure of the earth, and the shape and dimensions of the surface of the earth. • No idea what powers the sun and the stars. • No idea of the distance to the stars. • No ideas as to why almost all stars don't appear to change position in the sky from opposite sides of earth's orbit around the sun when the phenomena of parallax says they should, and why we can only use the parallax method for measuring the distance of stars that are closest to the earth. Luckily, Polaris is one that we can determine the distance to using parallax, because it is also a Cepheid variable star, which allows the distance to be measured to much more distant stars where the parallax method not longer works. • No idea of the distance from the earth to the planets, or even much about them at all. • No idea why binary stars obey Newton's law of gravitation. • No explanation as to why we can only see 59% of the total surface area of the moon when, from a flat earth perspective we should be able to see most of it, including the dark side of the moon. • No idea why the moon appears upside down in the southern hemisphere compared to how it looks in the northern hemisphere, and why the phases of the moon are on opposite sides of the Moon, and why it looks circular from all vantage points on the earth. • No idea why sunspots rotate in the opposite direction in the southern and northern hemispheres, or even what sun spots are. • No believable explanation for how GPS is implemented across the world. • No explanation as to why aircraft carry ring laser gyros onboard capable of detecting the rotation of the earth. • No idea how it is possible to develop gravitational maps of the earth's surface, or why anyone would want one, or how they could be used. • No explanation for how eclipses work, especially lunar eclipses, or how to predict them correctly. • No idea why the Humber bridge, the Verrazzano Narrows bridge are built to account for the earth's curvature. • No idea why CERN, LIGO and the Stanford linear accelerator vacuum rings and arms are constructed to take account of the earth's curvature. • No idea why physicists working on LIGO, the gravity wave detector, were awarded Nobel prizes in physics. • No idea why geodetic surveyors keep claiming the earth is an oblate spheroid. • No idea why Google Earth does not publish its underlying flat earth model that allows it to project the earth as a globe. • No explanation as to why the sun rises due east for everyone on the earth on the equinox. • No idea why an observer on the equator during an equinox does not see the sun set at an angle 19° above the horizon. • No idea why there should be a discernible horizon that looks like the edge of the ocean viewed from a beach. The horizon should really be a blur as the farther we look out across the flat earth, the more light is scattered and the more particles in the atmosphere obscuring the view. • No idea how it is possible to see the sun set twice simply by changing your height above the earth (quickly by just a few tens of metres). • No reasonable explanation as to how Polaris can be used in conjunction with a sextant in the northern hemisphere to determine latitude. • No explanation as to why the Artic and Antarctic experience months of days and nights at differ times of the year. • No explanation why bright little objects called satellites by some are regularly visible in the night sky following a predicted path across the sky • No explanation for how tides work.(What to say about Magma tides, their biscuit Earth should crack in pieces) • No explanation how (most times) boats disappear over the horizon when they should be visible on a flat earth. • No explanation as to why the horizon does not rise to eye level. • No credible explanation why helium balloons fitted with non-fish eye cameras often detect the curvature of the earth. • No credible explanation for the existence of the "Downward" force called gravity. • No explanation that does not implicitly make use of the theory of gravity for the atmospheric pressure gradient from high to low pressure with altitude, especially if we live in a dome. • No idea why (almost without exception) hurricanes and typhoons rotate in opposite directions in northern and southern hemispheres respectively. • No explanation for the Coriolis effect observable in controlled experiments such as those conducted by Ascher H. Shapiro in the 1960s. • No explanation as to why the northern celestial pole rotates counter clockwise in the northern hemisphere, and the southern celestial pole rotates clockwise in the southern hemisphere. • No idea what Antarctica even looks like, and where the South Pole is physically located. • No idea why Venus has phases. Bye bye Geocentric system. • No idea why planets, e.g. Mars, exhibit retrograde motion. Hello Heliocentric system. • No idea why the planets and their moons in the solar system appear to be obeying Newton's laws of planetary motion. • No explanation whatsoever why Stellar Aberration occurs. • No idea why clouds are illuminated from the bottom at sun set. • Can't explain how a commercial aircraft can fly from Perth to Sydney in only 4 hours 10 mins across the flat earth, as to achieve this, it would need to fly faster than an F18 on afterburner all the way. • No idea why the CO2 atmosphere of Mars appears to "Cling" to the exterior of its spherical spinning surface without the need for physical containment. This phenomenon is observable on others planets too. • No idea why the sun and the moon don't change in angular size from rising to setting by a factor of 2 to 3 since they are local to the earth, and no idea why the sun according to the inverse law of radiation is not 4 to 9 times brighter at midday than at sunset and sunrise when viewed from Australia. • No credible reason why millions of people (mostly scientists, engineers and technicians ) over decades would lie to keep the globe earth alive, and why nations and commercial enterprises, accountable to the voters and shareholders respectively, would spend (waste) $2 trillion a year , each and every year to maintain the globe lie. • No idea how it is possible to measure the value of G, the universal gravitational constant and in so doing, verify the theory of gravity. • No scientific papers publish in the last 100 years supporting the flat earth. • No idea why there is snow on height mountains with a local sun as it has to get warmer and snow should melt if you get closer to the sun. Now the globe earth and the heliocentric model have answers that are consistent with each other to all of the above that the flat earth can't explain, but the globe earth is wrong and the flat earth is correct , even although the flat earth model is almost useless at explaining anything?

"... shine a flashlight on a beach ball or something. Get your life together." is the funniest thing I've heard this orbit 😂

POV: You've been scrolling through the comments for way too long trying to find a flat earther to roast.

Asked a flat earth women if she would like to dance. She said no because she refused to believe we were at the ball 🤷

You know it’s bad when half of these can be debunked by a teenager who paid attention in physics class

James Randi called them unsinkable rubber ducks. Flat earthers are textbook examples.

Imagine writing a book of 200 "proofs" but not taking the time to check what proof means.

I had to watch this in 5 batches with breaks between. Not because it was long, but because my brain seized up listening to the idiocy, and it took a little time to recover.

I’m not sure what’s funnier; the fact that this guy probably wasted 100+ hours writing this book, or that it took only about 90 minutes to completely debunk.

"Science is not about building a body of 'known facts' - it is a method for asking awkward questions and then subjecting them to a reality check, thus avoiding the human tendency to believe whatever makes us feel good". [Terry Pratchett]

"Once you get really high, you'll see it" what kind

85 minutes of you mocking and demolishing flat earthers? You truly are the hero we need right now. Thank you for this gift!

What's sad is I went through the christian education system, and while we were never taught the world is flat. I am constantly amazed at the amount of stuff I wasn't taught. I've been an avid reader of physics and biology books in my adult life trying to make up for my lack of education and everytime I watch these videos I learn something which makes me a bit sad because I really should have known all this already. This is just my way of saying I appreciate the content Dave provides.

If Earth was flat, there would be slimes spawning everywhere

as an Eric, I profusely apologize in name of all Erics for this fool

One thing is for sure: Spectroscopy needs to be in a container.

take a shot every time Dave says "moron"

One time I read a quote from a flat earther calling the atmosphere as "atmosflat", I nerver laughed more in my life

Don't you hate it when the pilot falls asleep mid flight, and forgets to account for the curve resulting in the plane filled with passengers flying past the stratosphere? Happened to me once, this is why I don't fly on Spirit.

"This is what happens when you never leave your mums basement. Save your yoga money and travel the world, Eric." 🤣 I had to pull off the road and now sitting like a moron next to the road laughing. 🤣

I just love how points 17 and 18 are contradictory. Like he's saying that we should see stars in every direction, yet immediately after he affirms that light speed exists.

Im sorry Dave you made a mistake. You said flat earthers could go to the south pole and get a job. That's simply impossible as we all know there is no such thing as an employable flat earther

You just know Eric's somewhere saying "well, you paid to download my book, so I win."

If Eric Dubbay actually watched this to the end I bet all he took from it was ...."he thinks my yoga poses are good" Hilarious watch

debunking flat earthers has the same vibe as dunking on a toddler XD

Flat earth breakthrough: OCEANS DONT HAVE WINGS

It's so funny how planes are just endlessly confusing these people.

I like how people say dave is using ad hominem as if they are blind and deaf until dave starts insulting people

the fact you still respond to comment is amazing, props to you for actually dealing with this. Side note your replies are normally funny to read, the massive contrast between your normal tone and them is gold.

"Oceans don't have wings" I'm done...😂😂😂

"200 proofs", more like "35 misconceptions repeated numerous times, plus some dishonesty thrown in for good measure".

If the Earth is flat, how come we need to use a magical elf boat in order to get to Valinor? Check mate, flat earthers

If moonlight really was cold you could freeze ants with a magnifying glass. Also, if the sun shone down in a beam, it would get to a point in the sky then just disappear rather than drop down below the horizon.

Ooooh boy flat earth is back on the menu!

“Pointing to someone else who is stupid doesn’t make you any less stupid.” 🤣🤣

I am 6 minutes in and i am very disappointed as a train enthusiasts that their name has been drug through the mud of a flat earth video

Notice how flat earthers try constantly to prove the earth isn't round, but never try to prove the earth is flat. Well they have, but end up proving it's round before moving onto the next crazy idea.

I'm sorry, Dave, but you're wrong. Flat earthers couldn't get jobs in Antarctica, to get a job one needs to be useful at something.

I met a flat-Earther for the first time, IRL, just a few weeks ago. I explained to him that I was an Army Radio Operator for 15 years and I was deployed all around the world, sending signals across the planet and I had to calculate for the curvature of the Earth for directional skywave propagation signals. He then told me that I'm a paid shill for NASA... which would mean that every radio operator on Earth in also apparently paid by NASA?... and we've all kept our mouths shut?!?... ffs, we're not even in the U.S... so why NASA?!? Oh, that's right, cause Flerfs think that NASA is a global shadow government trying to destroy their Bible. They're SO f'n desperate

1:07:19 this reads like he only knows the word vacuum from vacuum cleaners and thus assumes that vacuum means that it magically sucks things in. Amazing

I once tricked Eric Dubay into thinking I was a flattard on one of his videos in the comments. After three simple questions, I scared him off with "How can the Sun illuminate the ceilings of level-flying aircraft at sunrise and sunset?!?" Even with his infinite excuses and ZERO facts, he was stumped. Derp!! The flat earth theory debunks itself, 200 times over and even more...

"Rails can't handle any curvature" Has this dude never seen a Rollercoaster in his life??

Thanks! Dave, you deserve a trophy for getting through all 200 items of that stupidity. Thank you for making it somewhat tolerable.

D...did Dave just make me read an entire flat earth book in less than 2 hours?

Poor Red Bull into the oceans, give them things wings

These Flerfs often accuse me of Lying about my Job. This is because: 1 - I test fiber-optic gyroscopes by using earth rotation as the stimulus. I have been doing this for almost 30 years now. I have tested the Litton LN-200, The Northrup Grumman SSIRU, the Airbus Astrix-120, the Honeywell MIMU, and my next project will fly another SIRU. 2 - AFTER I test these gyros (using earth rotation as the stimulus) I install them onto real spacecraft, launch them to space, then USE THEM to point the spacecraft to do things like: Takes Photos of the earth from space.

I don't know whether to be amazed or disappointed that so many of these are just re-phrasings of "I don't understand Conservation of Momentum, and I have to protect my kids from understanding it!"

This is so stupid. We literally have a live stream of earth from the ISS, and guess - its not flat. Or just get on a plane and see for yourself.

I love that you got over these 200 proofs quickly. Most others take too long.

_"If they were right, one proof would have been enough"_ *- Einbert Alstein*

THANK YOU FOR NOT PLAYING DUBAYS VOICE

If the Earth was actually flat, Eric Dubay would deposit 500,000 dollars on my bank account by Friday.

The German Paris gun that shelled the French capital in WWI had a range of 75 miles. The trajectory calculations had to compensate for the rotation of the earth.

"A sphere can't reflect light.." It's like the Disco Ball never existed! 💃

And this convinced...zero flat earthers.

i dont know if this was just a throwaway joke or if you heard the news / it made international news, or if it originated somewhere else and was just repeated here ,but the fact that the flat Earth has a "Pacman effect" where if you go far enough to one side you get teleported to the other side is a HUGE meme here in Italy , as after a youtube video exposed what was being said in a flat earth convention that took place here, many started to rightfully ridicule some of the """"theories""""" expressed, including the pacman effect and the fact that Australia doesnt exist. So yeah , some flat Earthers genuinely believe in the Pacman Effect.

ty for taking the time to do this. idk where you get the fervor, as I would have walked away as my patience and focus gets exhausted with each passing page.

"I believe the Earth is flat because everything that says otherwise is obviously just CGI"

Here's a faster debunk: We can't see the sun at night.

The rewatchability of these flerf debunkings is unparalleled

Our solar system according to flat earthers: O o o -- o O Ø O O •

I'm still thinking about the way the skateboarding clip ends right as the skateboarder is starting to fall over.

Laughed so hard at "Shine a flashlight on a beach ball or something. Get your life together." 😂 That one statement should be the motto for debunking Flat Earthers from here on out.

I’m 14 years old and even I know the earth is round

Hostility in Dave’s tone has been continuously rising since this flat earth thing. But who can blame him? They piss me off just the same.

The fact that we've reached the point where a 21st century professor has to sit down and explain why the Earth isn't flat for 2 hours is extremely concerning for us as a species

No way, you're actually tearing THIS legendarily horrible video to shreds! I remember a few years ago flat-earthers spamming this everywhere! Can't wait to watch this video in the evening with popcorn, it's going to be a great time!

200 FE proofs? If they were right, ONE would be enough

18:28 "where are you getting these numbers from the 1500s?" "use the internet moron" im dying🤣🤣💀

I think I can describe flat earthers in one sentence: "I can't understand it, so it's fake"

The Foucault Pendulums proves the eart is round and spinning quite elegant.

It's funny how flerfs are constantly saying "this science this is too insane! The speeds, sizes, and distances in the globe model are too crazy!" But when it comes to trying to prove God they're like "look at these insane science facts! Clearly it must have been God!" All while arguing for a small, enclosed, simple universe because that's all they can comprehend; not realizing that arguing for a seemingly infinite, impossible to comprehend universe is more in line with the characteristics of their God.

Scary thought: They are allowed to vote😩

Hey Professor Dave! I’m an undergrad physics student minoring in math and I’ve been interested in flat earth obliteration for over 4 years now. Your videos are always funny and actually get me thinking about some of the phenomena that I can’t immediately explain! You’re one of the big reasons I got into physics, so thank you!

I love the Mario Galaxy analogy! It's perfect! 😂

I don't know which is more impressive, the dedication to create 200 proofs, or the dedication to debunk them

Actual Counter Argument: That one children’s story about the train engine that thought it could

Was going to post this in the Flat Earth subreddit but got banned lmaoo

The fact that he thinks the horizon is always eye level means that he not only believes that the earth is flat, but that it is also INFINITE.

tks for taking one for the team, I wouldn't have read that ball of madness if I was getting payed to do it...

Flat Earthers are basically: "I don't understand basic math and physics, therefore everyone is wrong"

Combing through this must have taken absolutely ages and much much sanity.

That great attractor drop was hilarious and totally unexpected 😂

I still want to meet some of these free masons. The masons that work on my bathroom are quite expensive unfortunately.

That argument answered with "ocean don't have wings, insects do" really show us the level of these people.

The real treasure here is how good a job Dave did coming up with one unique insult per “proof,” which clearly was the more difficult task than it was for him to debunk them.

I've said it before and this just reinforces my feelings on the topic; the central tenet of flat-eartherism is not understanding how big the Earth is. Every single argument they make from not seeing a curve, to train tracks not considering the curve, to pictures of Earth from space or of a flat horizon, every one of them can be explained by the idea that these people think the Earth is really really small instead of really really big. The entire movement is made up of people who cannot imagine how big the Earth is and so choose to believe that all the observations they make that don't support a small round earth must imply a small flat earth instead of realizing that they lack the imagination to visualize just how vast our planet is. I have trouble understanding sizes at a large scale too, but just because I cannot get my brain wrapped around the distance between the Sun and the Earth or how big a light-year really is *does not* mean that the sun is actually just painted on a firmament or something equally absurd. Some people will absolutely refuse to admit their lack of imagination and will ironically use what imagination they have to come up with something they can wrap their heads around without having to admit their own limitations.

Ohhh dear... My favourite quote of this video is: Oceans do not have wings (15:20) It caused a little existential crisis at myself but i'll surely get over it. Thanks for this video!

Real talk: onboarding the fact that fluid dynamics = air was the most revolutionary thing for helping me understand why physics matters.