Closer To Truth: Is Time Travel Possible?

There is an ongoing PBS TV series (also several books and also a website) called “Closer To Truth”. It is hosted by neuroscientist Robert Lawrence Kuhn. He’s featured in one-on-one interviews and panel discussions with the cream of the cream of today’s cosmologists, physicists, philosophers, theologians, psychologists, etc. on all of the Big Questions surrounding a trilogy of broad topics – Cosmos; Consciousness; God. The trilogy collectively dealt with reality, space and time, mind and consciousness, aliens, theology and on and on and on. Here are a few of my comments on one of the general topics covered – Is time travel possible?

# Is time travel possible? Actually I personally don’t believe time exists. Change exists, and time is just our measurement of rate of change. IMHO time is just a concept. Time is a mental construct that helps us come to terms with change. Some cosmologists say that time was created at the Big Bang, as if time were a thing with substance and structure, but I challenge them to actually create some time in front of their peers or maybe a TV audience or at least produce a theoretical equation or two that would create time. In the meantime, here’s a trilogy of points.

First, the concept of time travel is one of those fun parts of physics. Whether true or not, it is entertaining to play the ‘what if’ game. If nothing else, the concept makes or forces one to think about the nature of reality.

Secondly, Einstein and others have postulated that time travel is a theoretical reality and I’m not in their sort of league that I can dispute the theories. I’ll leave that to others who know the field inside and out.

But thirdly, and most importantly, you can never actually be in the future or the past, only in the future or the past compared to where and when you are now. In other words, no matter how you slice and dice things, you exist in the where-ever and in the whenever in that where-ever’s or whenever’s NOW or in other words in the present. You cannot literally be in any future or in any past since you only experience the NOW which is the present. If you should somehow travel back one hour, you would still experience things as belonging to NOW. If you sleep for one hour then wake up, you are in the future relative to when you went to sleep, but you still find yourself in the NOW.

# Is time travel possible? The answer is both yes and no. Yes, we can travel into the future at one second per second, we do that anyway whether we like it or not. Yes we can travel into the future at a slightly quicker rate by going to sleep or otherwise having our sense of consciousness, our awareness of rate of change (which is what time really is or measures) incapacitated. You get drunk and pass out and the next thing you know you are 12 hours into the future. Yes we can travel into the future as outlined by Einstein’s twin ‘paradox’ where one twin travels at a very high rate of speed outward bound, stops and returns to home base, while the stay at home twin, well, stays home. Upon their reunion the travelling twin finds their stay at home twin to be far older, so the travelling twin has travelled into the future more rapidly than would otherwise have been the case. Yes, you can travel back in time, in theory, according to the apparent theoretical properties that wormholes or black holes can have. No, you can’t travel to the past because of all of those nasty paradoxes. I like the variation on the grandfather paradox whereby you travel back just one hour into the past and shoot yourself dead. That’s a novel way of committing suicide! The other paradox I like is when you go back in time to have Shakespeare autograph your copy of “Hamlet”. Shakespeare isn’t home but the maid promises to have him autograph your book when he returns. Alas, your timing is slightly off and Shakespeare hasn’t yet written “Hamlet”, so when he receives your copy from his maid to autograph, he reads it, and after you return to Shakespeare’s home and receive back your now autographed copy and return home to your own time, Shakespeare now writes “Hamlet”. The paradox is, where did “Hamlet” come from since Shakespeare only wrote it after he had already seen your copy. No, you can’t travel back to the past because if that were possible there would be hoards of time-travelling tourists who went back in time to witness some important historical event or other. No hoards of photo-snapping tourists have ever been documented being present at Custer’s Last Stand, the Battle of the Alamo, the sinking of RMS Titanic, or any one of thousands of similar historical events. Yes, you can travel back in time but only into a parallel universe. If you shoot yourself but it is another you in another universe, no paradox arises. You travel back in time to have Shakespeare autograph your copy of “Hamlet” but in that parallel universe Shakespeare can now write “Hamlet” based on your copy and no paradox results. However, the one point I find interesting is that if you end up in the future, or in the past, are you really in the future or the past? No, the only time you can exist in is the present, your right here and NOW time. It might be a different time from what you previously knew, but still wherever and whenever you exist, you only exist in the NOW.

# Is time travel possible? It could already be the case that time travel has been documented at the quantum level although that could be open to interpretation. Before I get to the specifics, I just need to point out that with respect to the laws, principles and relationships of physics, time is invariant. Operations in physics remain invariant in time whether time is moving as we normally perceive it (past to future) or back to front (future to past). For example, gravity would operate as per its normal grab-ity self in a world where time flowed backwards. There’s many an operation one could film that when the film were run backwards, one wouldn’t be any the wiser. Tree branches blowing in the wind comes to mind, or the coming together, collision, and rebounding or separation of two billiard balls. Okay, having established that when it comes to physics, physics doesn’t care which direction time is flowing, there will be no violations in those laws, principles and relationships of physics future to past, we now come to the delayed double slit experiment.

In the normal double slit experiment, you have an electron gun that fires one electron particle at a time, such that one electron completes its journey before the next one is fired, at two side-by-side slits. If one or the other slit is open, the one-at-a-time electrons pass through the open slit to a detector screen behind the slits. The detector screen gets hit in nearly the same spot every time after each and every electron particle passes through the single open slit. That is straight forward. If both slits are open, the electron shape-shifts into a wave (how I don’t know), passes through both slits (as only a wave can), morphs back into a particle and hits the detector screen. The difference is that after enough electrons have been fired, and have passed or waved through the double slits, the hits on the detector screen are not in just one or two spots but all-over-the-map, albeit all-over-the-map in a classic wave interference pattern. Okay, that’s the classic experiment.

Now we do a variation on the theme, the delayed double slit experiment. Electrons are fired one-at-a-time, with both slits wide open. An all-over-the-map classic wave interference pattern should appear on the normal detector screen after enough electrons have been fired. However, in addition to the normal detection screen, there are two other detectors positioned behind the normal detector screen that are each in an exact line-of-sight with each of the two slits. The electron is fired. It morphs into a wave and passes through both slits then morphs back into a particle. But before the electron, which has already passed through both slits, can hit the detector screen, the detector screen is removed to reveal behind it the other two line-of-sight detectors. Now presumably once the electron has passed though the double slits it’s too little too late to change its mind about where it’s going to hit. Only a tiny few should be detected by the two line-of-sight detectors aligned with the two slits. Alas, each and every electron will be detected by one or the other of the line-of-sight detectors. It would appear that the electron CAN change its mind after it has already gone through both slits and instead appear to have gone through one or the other of the two slits. One interpretation is that the electron, after having passed through both slits, realised the gig was up, travelled back in time, retraced its path and passed through one or the other slit.

As an aside, the late Nobel Laureate Richard Feynman noted that the double slit experiment went to the heart of quantum weirdness. I mention this because it was the same Richard Feynman who suggested that a positron (an anti-electron) was just an ordinary electron that was going backwards in time.

# Is time travel possible? I have several other points to make about the concept of time travel.

Firstly, there is Stephen Hawking’s idea of a Chronology Protection Conjecture which postulates that there is some as yet undiscovered law of physics which prevents time travel to the past and thus makes the cosmos a safe place for historians to strut their stuff.

Secondly, it has been said that you cannot travel farther back in time than the date your time travel ‘device’ was constructed, be it a wormhole or some other gizmo. So if some genius builds a time travelling ‘device’ in 2014, he’s not going anywhere into the past. But in 2015 he can travel back to 2014 and in 2114 he could travel back to any time between 2114 and 2014. The analogy is that you cannot travel through a tunnel prior to when that tunnel was built. Thus, we don’t see human time travelers because no human time travelling ‘device’ has yet been constructed. The flaw there is that doesn’t prohibit ET from visiting who might have constructed a time travelling ‘device’ millions of years ago. Recall those pesky UFOs though they don’t seem to cluster around significant terrestrial historical events so maybe ET doesn’t care about our history and are just here on vacation from their future.

Thirdly, presumably your time travelling ‘device’ is fixed at some sort of celestial coordinates. Because everything in the cosmos is in motion, when you re-emerge into that cosmos after starting on a time travelling journey, while you may be at those same fixed celestial coordinates the rest of the cosmos would have moved to differing celestial coordinates. So, if you start out in London you won’t end up in London on down, or up, the time travelling track. Finally, the concept of your, or the future or of the past or your past is only relative to what you choose as some fixed point. If you pick your date of birth as that fixed point, then clearly you are now in the future relative to your date of birth. If you pick the concept of an ever ongoing NOW, the present, as a fixed point, you are neither in the future or the past relative to the NOW nor will you ever be. That of course doesn’t mean you can’t recall your past, what existed before your NOW (although the past in general is more abstract) or plan for your future after your NOW (although the future in general is beyond your control).

# Is time travel possible? There’s yet another form of time travel, or at least the illusion of time travel, and that’s via the cinema. Films and TV shows involving time travel are many and often legendary. But that’s not quite the medium I wish to explore here. One can program time travel into a computer simulation. You can have a video game where the characters travel backwards (or forwards) in time, or have a software program that loops around back to the beginning. Now the question is, might we be characters or virtual beings in a Simulated (Virtual Reality) Universe? If so, the software programs that run our virtual show might allow for time travel, or virtual time travel, yet still time travel that would appear to us to be quite real. Now where does our sense of deja vu really come from?

# Is time travel possible? There is one other form of pseudo ‘time travel’ towards the future that can be debunked. Presumably the only way you can know what the future brings, without benefit of any theoretical ‘device’ that can propel you there at a greater rate of knots than at one second per second, is to stay alive. Once you kick-the-bucket that’s it. Your second per second journey towards the future is over. It’s a pity that that worthless stock you hold just happens to sky-rocket to fantastic values within a week of your demise, or maybe you’d really like to know if ET exists but the discovery happens a few days too late as far as you are concerned. Of course some might claim an afterlife will enable you to keep up to date with future happenings from that heavenly vantage point high up in the sky, but apart from that, there are those who claim to have led past lives or existed in past incarnations. Thus, you can still continue your journey to discover what the future holds by passing on to another body via being conceived again (and again and again). There’s one huge problem however with ‘remembering’ alleged past lives. Your mother’s egg cell cannot remember your past lives. Your father’s sperm cell cannot have any recollection of your past lives. Therefore, the you that comes to pass at conception cannot hold any memory of past lives. So, where did your memory of past lives come from? Might I suggest that it was internally generated out of wishful thinking, that perhaps a belief that you existed in the past will give rise to a belief that you will exist again in the future, and as a pseudo form of afterlife and as a pseudo form of ‘time travel’ that gives you comfort. Anyway, that concept is a really far out methodology of ‘time travel’ but one which can be dismissed despite the many people who seemingly believe that they indeed have ‘time travelled’ towards their endless future via this method.

Discover How Many Travel For Pennies on the Dollar at Home or Abroad!

Everyone wants to how to travel for pennies on the dollar. Resorts and hotels can cost well over $400 a night if there are rooms available for the time period that you want. Some resorts have over a year long waiting list. Many reserve their rooms for owners or those who have timeshares.

Where does that leave most families or travelers? Normally, moderate hotels with two people to a room is what you are going to get with an all inclusive package. For many people, there is nothing wrong with this because that is all they need. For those who have four or more people in their family, this accommodation obviously is not going to work. Many families try to get two rooms; one for the parents and one for the kids.

The result of these accommodations is spending a lot of time apart on the vacation. Teenagers often have their own plans for the day while on vacation which includes their own activities and going back to their own room. For a family to be able to stay together, a condo or suite must be rented. Neither one of these options is cheap. They can end up costing several thousands of dollars for a single week.

One benefit to renting a condo is having a kitchen. It seems that most of the money spent while on vacation is on food. This can ultimately decrease the cost of vacationing and the family can get together to eat without being in a restaurant. One of the purposes of going on vacation is to enjoy spending time together.

To spend time together, eat together and bond consider buying a time share. This option may not be affordable to many families because of their cost. Also, regardless of whether you travel or not, it still has to be paid for. Try to locate one that will allow you to vacation in several places.

Purchasing a vacation membership is rather new and not as expensive. Giving travelers more options when traveling is what vacation memberships do. Be wary when selecting your membership because not all of them are good values. Some will set limits on the hotels that can be used and when you can visit them. This is important to keep in mind when going on vacation.

Research the memberships to see if they suit your needs.

To experience a little of the old and new worlds combined on a budget, visit Thailand. Traveling for next to nothing in Thailand is listed below.

1.) Do not waste your money at the expensive restaurants. Instead, enjoy the same quality and tasty Thailand food at the hawker stalls.

2.) Thailand also offers amazing shopping. Like anywhere, Thailand has its malls that you can shop in but there are many alternatives for shopping where you can get great deals on items that are just as nice. Include a large outdoor market called Chatuchak for your weekend shopping. You will find almost everything that you are looking for in the maze of stalls.

3.) Anytime you travel abroad and tend to stick out in a crowd, be wary of scams that are waiting for you.

4.) Make sure to bring a calculator with you when shopping. This is an advantage when trying to bargain with those who do not understand much English.

These are just some ways to travel for pennies on the dollar whether in your own country or traveling abroad.

Two Picks For Your Heated Travel Blanket Item

People tend to travel the most during the summer season. Some visit exquisite places in the built-up areas, where they could stay in tourist hotels. Others go to the wilderness, to the rocky, forested and mountainous regions without settlements. If you plan to visit these harsh areas for camping, picnics or hunting, you have to mind your health risks. Park the best tents, clothes and accessories. As you park your things, never forget a heated travel blanket. This amazing item has many uses. It is good for camping, road trips, cruise ship trips and so on. This is why it has to become part of your wardrobe. It is different from the usual blankets, shawls, knitted sweaters and so on.

You could use one heated blanket next to the skin and enjoy adequate warmth. This is unlike the usual jackets, sweaters and so on. The blanket for traveling normally features long cords with an LED indicator light to warn you when the unit is ready. You have different styles to select and buy. A few Amazon styles include the following:

The heated fleece travel electric blanket. This is a lovely red plaid blanket, which has very many uses. You could use this stylish blanket:

• When traveling to your doctor, to a scenic place, to the mall or grocery store and other picnic places during a cold day.

• You do not have to plug the blanket in the outlet to enjoy its power. Its two layers of very soft polyester fur traps heat and retain it. If you cannot stand the very cool air in your car, simply wrap your body with this blanket.

• If you require additional warmth, attach the adapter to a twelve-volt lighter outlet in the RV, boat, camper and car. Give the blanket only ten minutes to heat totally. The design of this blanket is in such a way that the heat distribution is even. Thus, you will not feel any cold parts when you wrap your body with this heated travel blanket

• Are you worried about your kids or a friend feeling the freezing cold? This blanket is 4’6 inches wide, explaining why you can share it.

• It comes with 6′ 3 inches power cord, which is long enough to allow you to use the blanket in the back seat. If your auto has the twelve volts lighter outlet in the back, you have an advantage.

This blanket is perfect when you want to take refuge from the freezing cold in the car, cruise ship and camping site and so on. Do you wish to travel with your pet as well? The Trillium heated blanket with a thermostat is simply the best. Measuring forty-two by fifty-eight inches, this blanket is wide enough for you and your pet. It has the outlined uses and features below:

• Perfect for use during the road trips, emergences and camping RV’s

• This electric heated blanket plugs into the auto’s cigarette lighter

• The blanket is made of total polyester fleece textile. It is of high quality and provides your skin with comfort and a soothing feeling.

• The system has a thirty to forty-five minute timer with an automatic turnoff

• It has an eight inches long fused cord with LED indicator. This warns you when the entire heated travel blanket unit is on.