When Is Now?
Вставка
- Опубліковано 14 лют 2021
- PBS Member Stations rely on viewers like you. To support your local station, go to: to.pbs.org/DonateOKAY
↓ More info and sources below ↓
We’re on PATREON! Join the community ►► / itsokaytobesmart
SUBSCRIBE so you don’t miss a video! ►► bit.ly/iotbs_sub
When is now? Seems like a pretty simple question… just look at your watch. But do you and I share the same “now”? Let’s journey from Einstein’s thought experiments about relativity to cutting edge neuroscience research to try and answer that question.
References: sites.google.com/view/when-is...
-----------
Special thanks to our Brain Trust Patrons:
dani bowman
David Johnston
Ahmed Elkhanany
Zenimal
Salih Arslan
Baerbel Winkler
Robert Young
Amy Sowada
Benjamin Teinby
Eric Meer
Jay Stephens
Peter Ehrnstrom
Dustin
Marcus Tuepker
Karen Haskell
AlecZero
Diego Lombeida
Join us on Patreon!
/ itsokaytobesmart
Twitter
/ drjoehanson
/ okaytobesmart
Instagram
/ drjoehanson
/ okaytobesmart
Merch
store.dftba.com/collections/i...
Facebook
/ itsokaytobesmartpbs
I love that physics just becomes philosophy when it gets deeper
Which blows my mind why philosophy is classified as an art and not a science...(it's actually both, I believe).
@@JaysonT1 my physics teacher disagrees and looks down upon your opinion
Just more proof that EVERYTHING is connected
@@lucasliam8238 I know. Most physics teachers will.
@@lucasliam8238 Here is something else to look into, "mathematical paradoxes".
next time in an argument I say: "Well I guess you're right in your own reference frame."
Thats stupid
@@iaw7406 nah, it's intellectual.
@@iaw7406 Its stupid in your reference frame.
@@iaw7406 destroyed
@@TheSpartan3669 ur mums a reference frame
Starting with a Spaceballs reference will always win me over.
Frankly I’d have been surprised if he didn’t start with that gag.
Thank you for commenting this to spread the good word
So good
Done deal:)
Fun fact, the "view from nowhen" was believed by our ancestors to be the view that departed spirits had, which is why the ancients would ask the dead for advice and predictions about the future, since the greeks/romans believed them to be outside of time.
That's WILD! That fact is a mixture of two of my favorite things... spacetime philosophy, and mythology! :D
That would mean they could ask for advice from themselves, as they also become spirits at some point in time.
“Now” doesn’t even feel like a word anymore
😭😭😭
Semantic saturation. Take any word, ANY word, and repeat it to yourself a few dozen times. It will stop making sense.
@@CarFreeSegnitz **does the same w "semantic"**
@@CarFreeSegnitz satiation* yes I'm a nerd
You woN an award for that lol
"Time is what prevents everything from happening all at once." - Richard Feynman
Consciousness can understand all existence simultaneously. However such notions would break most let alone attempting such.
@@targeted-individualdallas-9963 worthless comment using up valuable spacetime
According to general relativity, everything IS happening all at once (sort of). Regardless, to Einstein, next Wednesday at Pike's Peek was another point in space-time much like where you are, right here, right now, but also much like last Thursday in Dubai. All exist 'concurrently' within the fabric of space-time. Our inability to perceive more than three plus dimensions indicates that being able to do so would not, up to this point, make us significantly more 'fit'. Unless we are, of course, at the cusp of when having such perception may be essential.
@@targeted-individualdallas-9963 This the biggest load of garbage comment I've ever seen. Consciousness is a very specific and admittedly interesting phenomenon. It is not just some buzzword that can be slung around to sound deep.
@@targeted-individualdallas-9963 &&&&&77
"that all moments are equally real and there's nothing special about the present moment except that you're experiencing it right now." I used to think of the world like that as a child, that everything is kept in it's own little place in history and once it happens it stays there, and isnt lost so the only thing that matters is that it existed once. Brings a lot of comfort
For the first time in my life I was somewhat able to comprehend general relativity!!
It's easy to understand what it is, it's hard to know how to use it 🤣
Doubt it.
"No, no, no. Go past this. Pass this part. In fact, never play this again." - Dark Helmet
ua-cam.com/video/iai2nlEkPSI/v-deo.html
@@balancedeuphoria7353 I hate you
No sir, I didn't see you playing with your dolls again!
1-800- d r u i d i a.
Thats the password an idiot would have on his luggage!
That spaceballs reference simply makes this video a 10/10.
A, thanks. Was hoping to find where I had heard that before.
@@Zpajro no problem.
That’s one of my favorite jokes from that movie.
@@PigRipperLAW I absolutely love Spaceballs! That entire movie is awesome!
spaceballs was actually the first thing i thought about after reading the title
I'm really grateful for videos like this because I used to talk about space time, and the illusions of reality in 7th grade, and I'd lose friends because I scared and confused them. I've found my people, and it feels nice.💙
Welcome!😁
Do you know what that is?
Found people?? In person?? Where??? 🥺
Omg I still do that and I'm 24 people think I'm insufferable 😂😭
it's really interesting and talking about it feels like having a superpower sometimes 😆🤣
Physicist Carlo Rovelli has a super interesting paper called “Neither Presentism nor Eternalism” that’s worth checking out if you’re interested in this stuff. He explains that while traditional presentism doesn’t make any sense with our modern understanding of physics, the “block universe” of eternalism isn’t the only philosophical alternative. It really comes down to what you truly mean by “present” and the ontological significance you apply to the idea of “reference frames.” Regardless of how you like to conceptualize time, I find his discussion to be very dope indeed 😎
Thanks!
When I saw the title, Spaceballs instantly came to mind... thanks for delivering on that thought!
Hey there! If you have some time and you're interested in knowing some facts about the megalodon, please go and watch my vid about the megalodon.. I'm not forcing anyone though
Yo how'd you manage to comment 2 days ago? Who are you? When is your now?
*Random fact: If you sneeze while traveling at 60 mph your eyes are closed for an average of 50 feet.*
*-Infinite Information*
Damn! How I wanna know too
I was just wondering when someone would mention Spaceballs.
Then: Vsauce.
Now: It's okay to be smart.
I was also going to comment that Vsause did this ten years ago. "Hi Vsause, michael here, is it ok to be smart?"
Lol
So we need only one video about it?
Michael here!
when
“Why are you late to work?”
Recites 19:39
The brain automatically synchronising discrepancies up to 100 metres is absolutely amazing! I had no idea it was doing that!
Time is an illusion that helps things make sense~
So we are always living in the present tense
@@VoxTenebrae now doesn’t exist, we are always either living in the future, or the past
Will happen, happening, happened
Time is an illusion and so is pants
@@AspienPadda will happen again and again
sorry but most people wont get it
"The "Now" you're experiencing is yours and yours alone."
That felt oddly empowering.
Yeah but I think I broke my now that I’m experiencing alone. Which is the opposite of empowering.
@@NonDelusional74611 Time is relative, time is equivalent to now, now is perspective, ergo perspective is *edit:somewhat* relative. When alone, your mind has the capability to self isolate and focus on imaginary threats (stress) when not dealing with real threats (busy bodied, fast moving environments). Try to be mindful of your breathing when alone as a way to set a pace and rhythm of brain and body. Thats how i get by with it.
@@NonDelusional74611 74611
@@nichmeniana7015 stop tryna be smart unless you are a relativity specialist.
@@mlgklipz2543 well i do have a degree in applied physics, do you?
“Your brain is not a clock that tracks time” as someone with ADHD I can’t agree more
That quote describes perfectly my ADD
You don't have ADHD
@@d_all_in not really, only ADD, no hyperactivity
Pretty cool... kudos to all this team... the work in the script and visuals are stunning and awe inspiring.
_If school explained things like this, it would be much more enjoyable._
And much harder to graduate.
Why every school is same at everyone's now
Can you be a teacher like this and still make your students grasp in-depth knowledge about what you're trying to teach?
UA-cam videos are surface-level scratchers at best.
You commented on the new LIMC vid too!
Definitely it will be enjoyable to see kids go mad
Joe: How did you get so fit?
Joe: I did One Pushup everytime I said "Now"
I made it into a shdrinking game... 'Hic'
Now is what is in between what is about to happen and what just happened.
@ 6:40 I'm not sure if your model is right. You can not add speed to light but the light is moving with the train with means it moving faster than the speed of light to . The right model the center of propagation of the light should stay where the guy on the station is not move along with the train.
This means that both observers would see the light reaching the back of the train first.
I am now, 2 years later than your upload now. Glad UA-cam recommended me an older video, this was perfect in all ways, thank you
"But what if I was on Proxima B"
That had some serious VSauce energy
Lol
If I was in the room with you, we'd agree on the same now...
OR WOULD WE? 👁 👄👁
*intense & mysterious music starts playing*
Proxima B? You’ve never been?
“So when is now?”
“You just missed it.”
"When?!"
Just now!
@@THall-vi8cp When will then be now?
Soon.
Spaceballs was such a riot!
and I would've said "And so did you!" :)
I really liked the light cone graphic. Best illustration I've seen on that issue.
0:36 love the Spaceballs reference.🤣
I can't believe they didn't give props to Spaceballs, the movie. They practically said it verbatim.
That's exactly my thought during intro. I even checked description area for any such reference. Nope, nothing.
I gave you a thumbs-up.
Sp.Balls was 30 years ago, but is not forgotten.
my bet would be the movie being too mature for their target audience. but yea, more of a wink would have been nice
It's called a reference. Or an Easter egg. It's for those that get it without having to explain.
@@jakesimm5889 ya, and they're usually in movies that reference another movie. I think if directors know each other, then it's an homage, but if an amateur takes dialogue from a movie without saying, "with easter egg" in the title is theft.
Went to the comments to find this.
"HEY Vsauce! Michael here. But where is, HERE? Or WHEN is here? *vsauce music drops*"
I think Vsauce has made a video about same subject as the video above...(title: You live in the past) and it was 9 years ago...
“But...what if I was on proxima b?” Game me mad vsauce vibes 1:44
Who read the comment in Micheals voice?
@@whataminow_1d is it the time illusions one? That one just came out a few weeks ago.
Vsauce was their research material...again.
really good video. I love learning about things like this. And you explain these concepts very well. Thankyou!
Watching this, it felt illegal for me to rewind or skip forward the video but pausing it just felt so right. I hope I'm not the only one on this.
“Has it ever struck you that life is all memory, except for the one present moment that goes by you so quick you hardly catch it going?"
tennessee williams
That is why Last Thursdayism is my church of choice :^)
It doesn’t go by you, you ride the now
Life is not all memory, because I'm leaving this comment right now, but I will not remember leaving it 7 months from now...
@@lorigulfnoldor2162 and it is memory now. It immediately was except the exact moment you wrote it.
@@jeanjacquesrousseau1955 But when it's FORGOTTEN, it cannot be memory anymore, can it? The point is: we experience, each moment, a lot more than we will remember half year since now. We experience a lot of life that does not become memory, it simply passes by, forgotten. That's not even touching Alzheimer... =)
Me:**trying to sleep at 2am**
UA-cam: i bet you want to know when is now?
Me: hell yeah!
Literally me right now lol (it’s 1:32 am) 😂
It's 1:20 am here "now" 😂
HAHSHAHAHA
All I know is now is time for you to sleep
Literally same
I used a cell phone to record my eye movements while looking from eye to eye
in a mirror. Just as you said, to me my eyes did not appear to move, but the video clearly showed them moving. Amazing stuff.
Viewing episodes over again. You share knowledge in such a powerful, uncomplicated way. I love the Mel Brooks energy. I’m watching spaceballs tonight!
At a security station I have a monitor displaying feeds from dozens of cameras. Each camera has a different lag when sending me information. I can see people moving through hallways from different angles at different times. I can hear a door open before I see it happen. I can see someone walking on the sidewalk before they have left the building. This perception can make you feel like a higher being.
Wow that's trippy!
As Winston said to Ray, "...when someone asks you if you're a god, say yes!" ;-)
Excuse me, you see someone walking on the sidewalk before they have left the building, you say? ... Not very good at hiding your powers, huh.
Interesting point of view
@@SenhorAlien Well, he can see someone walking on the sidewalk (Cam.1) before they have left the building from the main hall through the entrance (Cam.2). It is not a power of the observer but a part of his reality :)
"Time is an illusion. Lunchtime, doubly so." - Ford Prefect
I could never get the hang of Thursdays.
I love this channel!! Pretty sure I was slack-jawed and drooling for most of this one.
This video blew my mind... but it was also explained very well!!
Looks like Joe has been talking to Vsause
My mind is still stuck on the fact that we don't know what the one way speed of light is.
Vsauce not Vsause
Beardless Michael still visits me in my nightmares sometimes
But hopefully we can agree on one thing: Tacos are delicious.
And veritasium
Ah the Spaceballs reference in the beginning of the video was just pure art.
13:04 (BG Ch 11 V16)नान्तं न मध्यं न पुनस्तवादिं
Without end,middle or beginning, every moment now is middle.
What a pro to explain something in depth with fewest words.
Loved this.
Also the the Space Balls skit in the beginning...lol
Joe: hey smart people!
Me: whoa, slow down there Bucko
Did you just say "bucko" lol?!
XD
The universe isn't stranger than we imagine. It's stranger than we can imagine.
@@fhajji Fun to contemplate.
Thanks for this video. Cleared up my doubts.
My mind just blew up. Thanks a-lot!
Love the Spaceballs, Back to the Future, and The Good Place references!!
Though I feel like that Space Balls bit was long enough that it should be credited.
what was the good place reference?
@@moriohsfreshest 8:32 over the globe
@@tiller6750 ohh
Sorry havent watched it in a while
You gotta watch The Adventures of Buckaroo Banzai Across the 8th Dimension !!! More gooder than back to the future !
"If you're feeling confused now......
don't worry: it get's weirder!!"
It always does...
I don't really worry.....only now and then ....
When does it get weirder? Is it now?
This circle dot experiment is something i notice almost every day as an animator. For me i see it like when we process the movement of things like the ring and then see the dot for such a short amount of time, our brains interlace it and it ends up like this
Truly the best explanation of this I’ve heard.
For the love of all that is Holy, Loved the "Spaceball" reference.
Is there a now?
“Yes! Or is it”?
- Vsauce
Is there a now?
"Yes! Or is?"
- Queen Oona
Damn... the vsauce music played in my head after reading it 😄
@@rijin9460 HAHAHAHA SAME
freaking loved the spaceballs bit!!! haha thanks. you made my night with that one;)
That ring/flashing light visual experiment is seriously trippy. Dang.
"I'm Barf - half man, half dog. I'm my own best friend." 😂😂😂
I'm so glad I wasn't the only person that caught the reference in the beginning
@@Saaciaysan Me too - it's a movie of my childhood
BARFOLAMEW
This is honestly my favorite one so far. Space/time is so interesting
Im not enchanted by physics it ruins all the friggin mystery. The world use to be magical snd now there is a boring explanation for everything. I would put all phycists under house arrest and tske away their phones and computers and just let thrm watch basic cable. Fight me nerd
@@Mynipplesmychoice try harder to understand .
@@Sorter_123 u want me to to try harder to understand the boring explanations to everday things? when i can turn to more exciting explanations that involves magic, follow the stars to see the future. And go searching forcancient aliens instead of looking under rocks to find a fossil of a 4 billion year old single cell orgasm. Single orgasms boring. Sorry i prefer my orgasms to be multicellular orgasms within multicellular orgasms
@@Mynipplesmychoice orgasm under a rock !!!!
What kind of detergents are you addicted to drink ?
@@Sorter_123 there are orgasm fossils in rocks everywhere and they’re boring. But ancient aliens are so much cooler then orgasms fossils
This is your coolest video I have watched including from the now that is after the now of when the video was posted
Super interesting videos. Thanks. Keep doing what you are doing
That intro made me feel like I'm explaining when "tomorrow" is to my 4 year old. I never realized how hard time really is to understand, and do I even understand it?
The intro is from the movie Spaceballs.
You could tell your 4 year old it's after it gets dark then light again.
Do NOT throw relativity at a 4-y-o. Keep it simple.
@@austenhead5303 it's easy dude just teach them some hyperbolic trigonometry, linear algebra, multivariable calculus, and variational calculus and then boom they're ready to learn GR ans SR
OOF
I think we’re all missing the fact that this man is a fan of “ Space Balls”
No fans of Spaceballs missed that tho
"WHO?!"
@@Yora21 yogurt
@@evilovesperry Yogurt? I *hate* Yogurt! Even with strawberries.
No, we didn't
Thanks for the Spaceballs replay. Excellent!
brilliant really enjoyed your video, practical ways of showing the laws of physics in the real world in which we live
The second I saw the title, my brain loaded the Spaceballs skit. Well done!
So we all live in the "now" the presence, but if we talk about the "now" we always talk about either the past or the future. So the "now" you live in is always, but the "now" we use to communicate is never.
Thanks for that summation. I can now move on to the next video in my playlist.
0:18 i might just be tio baked for this but this feels like a wizards of waverly place scene. The CGI, simplified acting over a complicated thing, repetitive exaggeration. I love it
I am so curious to relate this to baseball and the hitter and the pitcher. Hitters on the mound often have to swing before the ball comes close to the mound.
finally someone talks about the questions my autism gave me when I was 5, just 5 year old me thinking 'but when we say now, when is that now. Technically that 'now' has already passed'
Literally exactly the same for me like EXACLTY my case
Literally me at 4/5 my mom thought I was so weird 😂😂😂😂
“Hey vsauce, Joe here!”
Itd be “hey smart people” tho
@@mrman5066 its a reference to another channel
@@ArthropodJay Yh Vsauce channel or Micheals
One of my favorite topics. And it constantly breaks my brain.
This is a brilliant video! Definitely checking out the channel!
Joe just watched Vsauce and Veritasium and decided he wanted to sum up all their concepts into his own video.
It's ok to be Vsaucasium
@@thenasadude6878 *Vsaucium
A certain Bill Wurtz once said:
A long time ago, (actually never), and also now, nothing is nowhere. When? Never. Makes sense right? 😁
Remember, when you are going nowhere, you are now here!
The sun is a deadly lazer.
That opening Space Balls bit was fantastic
Thank you very much for this learning experience!
I love the Spaceballs opening segment that was great.
0:20 Takes some serious space-balls to try to steal this bit
SUCH a cool vid! You folks are amazing...BRAVO! 👏🏼👏🏼👏🏼
I love how the intro feels so much like the certain scene in Spaceballs
Well, that depends on if you’re South African or not. There’s now, just now and now-now which all mean different things!
Spotted the Saffer :-)
I never think about how much I say now-now 😅
What do they mean?
Eish now now 😂
Now-now has evolved (or devolved) into nuh-now in my circles. 😂🇿🇦
"All moments in time are real. But some are more real" - Animal farm
All whens are now, but some are more now
Opening with a Spaceballs bit? Kudos, Joe. Kudos.
The audio sync bit was awesome. When I first glanced up, your mouth WAS moving out of sync with your voice. But then it suddenly wasn’t. Very cool.
I love that spaceballs reference at the start
"Reality is an illusion, the universe is a hologram, buy gold."
Seems like Bill Cipher was not kidding afterall....😂
He wouldn't lie for something like that.
The flash on the train example doesn't work. The animation was even changed for each perspective. It was said that from the camera man's perspective the light reaches each end simultaneously, but that is not true, because the train is moving forward, so it would hit the rear first, even from his perspective. So his and the person on the ground would both agree with their perspectives. The animation was changed to reflect this when showing the observer on the ground.
That explains why you can sometimes predict the rest of someone's sentence and respond to it before you even experience the sentence they speak having completed. Pivotal information is sorta just... "predicted", from the frame of reference we experience. Like branch prediction on a CPU, with some time budgeted for rewind-postprocessing.
That flash of light at 11:05 does create a sphere, Joe, but after 1 second, it's expanded 1 light-second in all directions... so it's *two* light-seconds across.
I was looking for this comment thanks
“How Soon is Now” by the Smiths got me thinking about this question decades ago. Thanks for the video.
Same.
I’m really late to this discussion however I’d like to share something....
I took this Circle test and saw the flash in the center. I then proceeded to send this to my music students. The advanced students also saw the flash in the center while the beginners & intermediates see it behind. I’d be interested if other music teachers get this same result.
Good stuff! It makes my brain shakes some how 😅
The sheer amount of knowledge packed and delivered in such a masterful way is amazing. Well done and thanks for making it!
“Here we are, trapped in the amber of the moment. There is no why.” Kurt Vonnegut
Well done Be Smart.. The best one among all great work.
Its my question from childhood thanks for making video on it
Such high production quality, cant imagine the amount of effort it took. One of your best yet! Thanks!
Yet? what is yet? why is yet? when is yet?
That opening. My sides.
Great use of a spaceballs reference.
uff, glad I'm not the only one old enough to have appreciated that
Thank you for doing a spaceball joke, it is my favourite quote of the movie
This is the best explanation of DLSS 3 i have ever heard.