The Biggest Ideas in the Universe | 5. Time 

Its amazing how he introduces such difficult topics without blantly providing facts. He asks questions, makes predictions, gives room to interpret. And all that comes with enthusiasm and general curiosity about the topic. Thank you Sean!

most near death experiance candidates agree that there is no time when we die ...this mean that entropy will stop with time and both are related to the process of living not the cosmose...Allah knows best.

Clearly... He has the "Spherical Cow" Award. 🐄 ↔🔵 = 😇 Much love Sean

he is a PHD wasting time in school is a waste of knowledge.. people like him deserve more which is university and science college

chillz :D just someone qualified to teach the curriculum, and passionate about their subject. Think you missed the point

@@gkelly34 Haha, great response

Quality content right here.

you my friend deserve everything

🤣🤣🤣👏

Why? That serves no purpose.

Dito

I feel the same, Brian Greene and Neil Tyson are also favorites.

I agree with Goat boy. Carroll communicates for the edification of his audience.

@@curtthechameleon Greene and Tyson are two of my favorites also. Brilliant communicators, something I'd enjoy seeing in more scientists.

Ditto ;O)-

And the grave in turn is featured at the top of Sean's blog.

"Something deeply hidden". I just read it. It's amazing.

It is amazing! And his book The Big Picture is a multidisciplinary masterpiece. I very, very highly recommend that one especially.

How formal is it? Is there any exploration of the equations?

@@chrstfer2452 informal for sure.

how would dark matter affect quantum entanglement specifically near a black holes event horizon?

I have that course too and have watched a couple of times. It's very good.

Do you still consider atheism to be close minded?

I wish this video was longer too.

Time doesn't flow at all. You can order the events a priori in relation to the increase of entropy. Accumulation of memory goes together with the increase of entropy, and this gives, at any instant, the illusion of time flowing to the increase of entropy. Mental experiment. The following events are ordered from what happens first to what happens after: 1-Albert wonders if it is possible to reverse the time flow. 2-Albert starts building a reversing time flow machine. 3-Somehow Albert just built a reversing time flow machine. 4-Albert activates the reversing time flow machine. 3-Somehow Albert just built a reversing time flow machine. 2-Albert starts building a reversing time flow machine. 1-Albert wonders if it is possible to reverse the time flow. Observation 1: Albert always perceives gaining information even when Albert's mind loses information (when time is reversed): if time flows backwards, then everything, even memory and thought, flow backwards. Observation 2: however you arrange the order of the events, Albert will always perceive exactly the same in any given event. Intuition: Albert's perception is confined to the events themselves, and any way of ordering them is just abstraction: what if there isn't any real order, and all the events occur simultaneously and will last forever, i.e. time doesn't flow? At least Occam's razor would be sharp. So, assuming that time is flowing, it is not possible to know the direction of flowing, and the perceived direction is always pointing to the increase of memory in our brain, regardless to the real succession of the events. Now I'll define SIMOULTANEOUS INSTANTS OF TIME We've seen, that we can reasonably assume that time doesn't flow. So I'm perceiving all my life, past and future, in this moment, though in different simultaneous instants: note that there are not contradictions since we are considering time as a mere coordinate (since it doesn't flow), so past and future are not "what has happened" and "what will happen", but rather different "positions" all existing now and standing still: this is the meaning of simultaneous instants of time. PERCEIVING THE DIFFERENT INSTANTS SIMULTANEOUSLY SEPARATELY I perceive all the moments in my life simultaneously, though separately, with no interference from each other: though in this instant I have memory of other events, the perception I have of them here is different from the perception I have of them in the past (we assume for simplicity that our memory is not such a mess, and it relates to real events, though the discussion of this assumption is interesting and could eventually be done separately). Let capital letters denote events, and numbers denote different perceptions of them. The sequence of their presence in our mind, to the increase of memory (as the illusory flow of time is perceived), is: (A1)->(A2,B1)->(A3,B2,C1), and so on. So, though I perceive A at any instant, I perceive it differently at any different instant. I'll say two events are perceived separately whenever I consider their perception in different instants: A3,B2,C1 are NOT perceived separately, while A1,A2,A3 are. I can consider sets of events, like entire instants: any instant is perceived simultaneously but separated from each other, while the events from a same instant are not perceived as separated. We see that the word separation now is used where one uses to use simultaneity: saying that time doesn't flow we emphasize that EVERYTHING is simultaneous, though separation in those sets of perceptions is maintained. MY (YOUR) IDENTITY We notice that not only any two different instants are perceived separately by the same person, but also the same instant is perceived separately between different persons. There is not substantial difference between [different instants in the same people] and [different people in the same instant], but matters of similarities in the content of perceptions. If I perceive myself in each simultaneous instant separately, this is equivalent to as I perceive different persons simultaneously. I can actually say I am different persons simultaneously, one for each instant of time, who share in common similarities in the information in the memory, arrangeable as a continuous flow of perceptions to the accumulation of information. And I can even say I am all the people, not only this one writing, i.e. I'm ALL the separate instants, regardless to the similarities between them. So we also eliminated possible assumptions about the disposition of identities (there is only one identity), and Occam's razor is even sharper than before. I recently found a similar intuition in Andy Weir's short story "the Egg", which I suggest you to read if these things are still not clear to you. After eliminating the assumptions about time and the identity, we can easily eliminate any other assumption about reality, like any possible disposition or order of perceptions. I am in fact convinced that all the existence is structureless. Intuitively I like to think of it as a point with no space around it. Any structure we can think of is purely abstract.

This is great 😂😂

I lent his book to someone before I was able to finish it but what I read was mind blowing.