How Does Time Really Work? 

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Anybody else tuning in to fall asleep? 😅

"human intuition is no yardstick for the way the universe really works" I really wish more people could accept this

What does space taste like? Immediately I get the picture of my dog, head out the window, tongue out, just enjoying being alive while I drive.

These videos are probably my most highly anticipated of any on RU-vid

Now. You're looking at now, sir. Everything that happens now, is happening now. Dark Helmet: What happened to then? Colonel Sandurz: We passed then. Dark Helmet: When? Colonel Sandurz: Just now. We're at now now. Dark Helmet: Go back to then. Colonel Sandurz: When? Dark Helmet: Now. Colonel Sandurz: Now? Dark Helmet: Now. Colonel Sandurz: I can't. Dark Helmet: Why? Colonel Sandurz: We missed it. Dark Helmet: When? Colonel Sandurz: Just now. Dark Helmet: When will then be now? Colonel Sandurz: Soon. Dark Helmet: How soon?

YES!!! When I see a new upload from this channel, I get so happy. I used to be happy and excited about life when I was studying physics in college. Taught high school physics after that and had so much fun with my classes. Unfortunately, the reality of low teacher pay, new family on the way, and my other option to make more than double if I work with computers, I went back to my tech job. Now I am almost always depressed, feel like there is no hope and nothing to look forward to in life any more. That being said, whenever I see these videos it takes me back to my happy place. Thanks for all the effort you guys put in to put these out. They mean the world to some of us.

Still one of the best channels on you tube . Cosmology , physics , geology , mythology , history , and great storytelling all rolled up in one .

My past self has been waiting for this video. My future self has rewatched it multiple times. "Now" I finally get my hands on it!!

I am so excited to watch this every night for a month straight

As a Welsh person, I'll tell you that now is in a minute. As we all say, "I'll be there now in a minute" 👍

This man’s videos kept me going for a while, wasn’t getting out much, wasn’t doing well but these videos ground me….now I’m over a year sober and enjoy these videos more than ever! Thank god for the educational RU-vid

Holy crap. You took something I thought was obvious and explored phenomena that I had never considered. You did a great job. Thanks.

I had the itch to watch a new history of the universe banger and saw a new video uploaded a minute ago, awesome, thanks for the bangers

Almost all at once when you think about it, but one frame at a time when documenting it.

I'm left with a question. When you die, your brain neuro pathways fire slower as you become brain dead. So, will our perception of time when we die slow down to an infinite perception on the last neuro event? I think I now believe in an infinite after-life, stuck in time, re-living my brain's last chemical burst of nirvana... forever.

so well written and put together, massive props to your channels theyre all so awe inspiring

Best practical explanation of a light cone I’ve heard so far. Really helped me better grasp concept

That was amazing. NOW I'm going to watch this episode over and over, like all of the others.

new sleep video dropped

Ooooh a new video on this channel. Can’t WAIT to listen!

Found this channel only a few weeks ago. Super stoked for my first release.

True fans in attendance ❤

Your videos are my favorite thing on RU-vid. Absolute excellence.

Your videos are amazing. One of my very favourite you tubers. Thank you so much for opening my mind. 😊

I been waiting for this!!! I can now put this on in the background while I fall off to sleep

HOLY SHEET WHERES MY WEED? Here we go 😎

The section towards the end would be even better to include how the "Brain makes decisions before you even know it" - published in Nature on April 11, 2008. Brain activity predicts decisions up to 10 seconds before they are consciously made! This directly impacts our sense of having free will - actions that we take are set in our brain - and can be predicted by instruments - before we are aware we “decide” to take that action.

Been waiting ages!! Worth the wait though thanks for all you do.

I love you guys.I will probably listen to this at least sixty times before you post a new one.

Here's one for the algorithm. Thanks for blowing my mind on a regular basis!

Excellent writting and delivery I stay in awe imagining each little analogy, metaphor and fantasies you people create Thank you

You did an excellent job. You hit on all the pertinent high points. I wish you were able to delve in Causality a great deal more. It is such an an important part bringing all the other parts together. Very well done. I was happy to recognise all the players accept one.

I've been waiting for this

I absolutely love the history of the universe and earth you’ve done. Fantastic content as always.

This was an incredible video. Thank you

I wish all your other video animations were like this. Great Job Mr Manuel

This Channel is amazing!!! Thanks a million!

Another awesome and enlightening video! Thank you !

What a great way to present such a mind-boggling topic!! VERY WELL DONE

Your videos are like therapy to me 😀 Please keep them at least one hour long.

Some argue that “now” is the only time that truly exists, as the past is gone and the future is not yet here. Others suggest that time is an illusion, and everything is happening simultaneously, with our brains processing events as if they were occurring in a continuous sequence2.

If now never ends, it's infinitely long, if now ends, it's like if never happened at all, in both cases it's not measurable

This video is living proof that the quality of the best youtube videos now far outclasses anything to be found on regular TV channels, which have become even more dire in recent years than before.

You touch on Julian Barbour and the Julius point. Some excellent work to understanding of time moving in 2 different directions at once. When you examine the Feynman diagrams and understand that the electron moves forward in time and the positrons move backwards in time it opens a whole new world. This is what I am trying to understand better. Thank you for the great review.

New History of the Universe? I pack a bowl and click.

Uploaded right before bed time. Thank you, History of the Universe, tonight will be a great sleep.

Just fantastic, like all the episodes on the channel. Please keep on existing!

40:26 every time you do a pause like this I have to check and see if the video is over. You got me every time.

There’s not a channel out there that brings me this level of excitement when a new video comes out!

26:53 Never say "move through space", as it implies you can (it doesn't mean anything, nada, zip, nothing) there is no absolute rest frame and your are never moving relative to or through space. This is a great way to trip up students of special realtivity.

Love these videos thank you ❤

Love the topic. One that i come back to often. Great video.

THANK YOU! Your items ALWAS provide "food for thought" in a world in which the mass media offers us ever-shrinking portions of INFORMATION and mental stimulation simply because it is geared towards "dumbing us down!" Look forward to your next project/item. Keep Well!!

"Even RU-vid videos is still surging towards them at 300,000 km per second". My first thought was this is a cool thought, but then I realized we're also transmitting TikTok videos to the cosmos at the same rate. We're doomed.

This one was awesome! Like all the rest from this channel.

Some mind-blowing stuff there - excellence continues in this series.

I feel guilty watching these amazing videos for Free…

This is why I get flustered in my head when people ask me what time it is. In my head, I’m saying “well, it USED to be 13:45:32;05 but now it isn’t anymore. I can check again for an update though”

This channel is simply incredible

That was brilliantly well explained.. Even if NOW isn't what we'd hoped it is.

Ok, so this is what Morrissey was so stressed out about…

Awesome new vid time !!!!! Love your work.

I like the voice it is a lot easier to listen to than others . His pronunciations are easy to digest! Thank you.

Seems like the longest time waiting for this new episode to come out but while watching it time flies by 😀

This makes me wonder how differently aliens would perceive time and how greatly that would interfere with our communication with them. Because most of our methods of communication rely on our perception of time

Jumped on 19 seconds into “now.”

So amazing! Thank you

Finally. 😂 Appreciate your work. Just wish there could be more. Felt like such a long wait!

Always a great content on every episode 👏👏👏

Another great video by arguably one of the best educational channels on RU-vid!

I was just pondering the when and where of now - and here is a video from my fave creator!

This is one of the few channels I regularly check for new content. My absoloute favourite thing on RU-vid. And this episode is a mind bender. Thank you, History of the Universe.❤

Your videos are always gorgeous, well written and perfectly narrated. Thank You for making my evening!

General relativity and quantum mechanics will never be combined until we realize that they take place at different moments in time. Because causality has a speed limit (c) every point in space where you observe it from will be the closest to the present moment. When we look out into the universe, we see the past which is made of particles (GR). When we try to look at smaller and smaller sizes and distances, we are actually looking closer and closer to the present moment (QM). The wave property of particles appears when we start looking into the future of that particle. It is a probability wave because the future is probabilistic. Wave function collapse is what we perceive as the present moment and is what divides the past from the future. GR is making measurements in the observed past and therefore, predictable. QM is attempting to make measurements of the unobserved future and therefore, unpredictable.

Your 3 channels are some of my favourites. I always watch them more than once. Just fantastic. Idea for a 4th channel: The Entire History of Civilisation. I’d love your take on it. Or will it be part of your humankind vids. (Will and Ariel Durants series ‘ The Story of Civilisation’ are my favourite books.)

These scientific essays make me philosophical about my life and the meaning of it all. Keep em coming 🤌

I'm so immensely grateful for this channel! Thank you, sincerely!

Probably the best science channel on RU-vid... Excellent!

Hell yeah I’ve BEEN waiting for a new video to drop

Wow!! I’m so greafull for everything you do on this channel.. thank you all!!!

There it is. I was eagerly waiting and I've postponed my shower session to watch this 😂

To everyone here, I implore you with all my heart to check out RUSH's song, "The Garden." "The future disappears into memory, with only a moment between. Forever dwells in that moment. Hope is what remains to be seen."

So very interesting. I would need to watch again a few times.

This was absolutely wonderful to watch through, nice job.

OMG.... OMG!!!! I am hyper ventilating!!!!!!! its here its here!!!!! (quickly goes to get a beverage, turn down the lights, and prepare the viewing area for whats sure to be a transcendental view)

This was phenomenal. Somehow these videos are getting even better 😵‍💫 🤯

I love listening to your videos during hale-bale makin' with my tractor! Wroooom! Also thx for the " earthshine" I tough I was a loonatic 😅😅

Yet another fantastic video!

Excellent! Great audio script!

This video is absolutely amazing! Thank you!!!!!

This was amazing!❤

I'm so excited... I almost wanted to leave work early for this.

Thank you all at HOTU!! LOVE LOVE LOVE your show, super awesome episode!

You have been making my world these last weeks. Hats off

This video was great. It is the most informative video that I have seen in years it explains time.

I enjoy these immensely and they are excellently narrated too

This is different from the other HOTU vids, which typically contain a lot of history of cosmology and talk about the issues current in the field. HOTU has been so thorough, and covered so much of current cosmology, that I wondered what you could do next without rehashing old themes again. But you did it. I am continually impressed, and never bored, with this channel.

A masterpiece, as usual. Thanks for that unique quality! But I do have a question : Did you change the microphone or something? Or did you had a cold or something that could alter your such beautiful voice?

The section on Entropy was deeply satisfying. Thanks HOTU.