Is time travel possible based on theory?

Excerpt from an interesting treatise on David Bohm, by David Peat (physicist).
3 THE ENFOLDING–UNFOLDING UNIVERSE AND CONSCIOUSNESS (1980) In this chapter Bohm gives an extended account of what is meant by an “implicate order,” as well as analogies indicating how implicate orders manifest in the explicate, sensual world. The processes of matter, organic life, and consciousness are all seen as flowing from the reciprocal ordering principles of enfoldment and unfoldment. It is through these ordering principles that the holomovement – the “ground of all that is” – expresses itself in particular forms and experiences.
The basic notion of enfoldment is quite straightforward – as when baking a cake eggs are “folded into” the batter. What was once overt and explicit – the eggs – becomes implicit and enfolded in the batter. But in the case of the cake, the medium of the batter results in an essentially random process of enfoldment, lacking any sustainable or discernible order. Bohm suggests that a more penetrating image of enfoldment is a mixing device that enfolds drops of ink into a viscous solution like glycerine. The combination of viscous medium and ink illustrate a process of ordered enfoldment.
Through describing multiple variations of this ordered enfoldment and unfoldment, Bohm draws analogies with the movements and discontinuities of electrons as understood in quantum physics. Rather than suggesting a continuous entity that moves “through” time and space, the image of ordered enfoldment–unfoldment allows for a view of the electron as a perpetually emerging explicate structure, temporarily unfolding from an ordered implicate background, and then rapidly enfolding back into this background, in an ongoing cycle.
http://cspeech.ucd.ie/Fred/docs/Bohm_2005_.pdf

I posted this as I believe it may touch on the OP question of time travel.
 
Paul Howard (Imagine Films, Ireland) and the late David Peat (Bohm's former colleague and biographer) were collaborating on a 90-minute feature documentary on the Life and Ideas of David Bohm titled Infinite Potential, up until David Peat's passing in June 2017. Paul continues the work that David Peat and he were working on together. Several interviews have already been filmed and full production of the documentary will begin in 2018.
https://thebohmdocumentary.org/the-quantum-potential/
 
potential, adjective
po·ten·tial | \ pə-ˈten(t)-shəl \

Definition of potential (Entry 1 of 2)
1: existing in possibility : capable of development into actualitypotential benefits

2: expressing possibilityspecifically : of, relating to, or constituting a verb phrase expressing possibility, liberty, or power by the use of an auxiliary with the infinitive of the verb (as in "it may rain")

potential, noun
Definition of potential (Entry 2 of 2)
1a: something that can develop or become actual a potential for violence
b: PROMISE sense 2

2a: any of various functions from which the intensity or the velocity at any point in a field may be readily calculated
b: the work required to move a unit positive charge from a reference point (as at infinity) to a point in question
c: POTENTIAL DIFFERENCE

Synonyms & Antonyms for potential
Synonyms: Adjective

implicit, possible

Synonyms: Noun

capability, eventuality, possibility, potentiality, prospect

Antonyms: Adjective

actual, existent, factual, real

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Choose the Right Synonym for potential
Adjective

LATENT, DORMANT, QUIESCENT, POTENTIAL mean not now showing signs of activity or existence. LATENT applies to a power or quality that has not yet come forth but may emerge and develop. a latent desire for success DORMANT suggests the inactivity of something (such as a feeling or power) as though sleeping. their passion had lain dormant QUIESCENT suggests a usually temporary cessation of activity. the disease was quiescent POTENTIAL applies to what does not yet have existence or effect but is likely soon to have. a potential disaster

Did You Know?
Potential can be either good or bad. Studying hard increases the potential for success, but wet roads increase the potential for accidents. But when a person or thing "has potential", we always expect something good from it in the future. As an adjective (as in "potential losses", "potential benefits", etc.), potential usually means simply "possible". In science, however, the adjective has a special meaning: Potential energy is the kind of stored energy that a boulder sitting at the top of a cliff has (the opposite of kinetic energy, which is what it has as it rolls down that cliff).

Examples of potential in a Sentence
Adjective

Doctors are excited about the new drug's potential benefits. Critics say the factory poses a potential threat to the environment.

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Recent Examples on the Web: Adjective

There are signs that markets and voters alike are growing warier of the potential for damage — raising the stakes for both parties.— NBC News, "Trump's China quagmire both an opportunity and cautionary tale for Dems," 13 Sep. 2019In other words, Waller has plenty of breakout potential this year and gets a prime matchup in Week 2.— Kevin Hanson, SI.com, "Fantasy Football: Week 2 TE Rankings," 12 Sep. 2019
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'potential.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of potential
Adjective

14th century, in the meaning defined at sense 1

Noun

1587, in the meaning defined at sense 1a

History and Etymology for potential
Adjective

Middle English potencial, from Late Latin potentialis, from potentia potentiality, from Latin, power, from potent-, potens
You are insane.

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You are insane.

[click]
I am insane? Sorry, I forgot to provide the link to the Wikipedia page. Perhaps they are insane.....:)

Let me add to the insanity;
Although the concept of electric potential is useful in understanding electrical phenomena, only differences in potential energy are measurable. If an electric field is defined as the force per unit charge, then by analogy an electric potential can be thought of as the potential energy per unit charge.
Therefore, the work done in moving a unit charge from one point to another (e.g., within an electric circuit) is equal to the difference in potential energies at each point. In the International System of Units (SI), electric potential is expressed in units of joules per coulomb (i.e., volts), and differences in potential energy are measured with a voltmeter.
https://www.britannica.com/science/electric-potential
potential energy

WORD ORIGIN
noun, Physics.
the energy of a body or a system with respect to the position of the body or the arrangement of the particles of the system.
https://www.dictionary.com/browse/potential-energy

If that is insane, science is insane, no?

All definitions share a common denominator: potential = that which may become (expressed in) reality.

It's really not a complicated proposition.
 
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Should someone reverse time all they would learn is what has already happened (it was them who stepped on that bug.) It is impossible to change the past, although it is possible to travel to it.
 
Should someone reverse time all they would learn is what has already happened (it was them who stepped on that bug.) It is impossible to change the past, although it is possible to travel to it.
At best we can only observe the past from the future, but never return to it.

IMO, Bohm proved that with his ink-drop in glycerine experiment.
https://transitionconsciousness.wordpress.com/2015/09/19/the-experiment-which-inspired-david-bohm/

Note how the past is neatly reconstructed, but only from a future present. Moreover, note the slow speed of the turn. This is to avoid turbulence which introduces randomness. When these few seconds are multiplied by years of history, when "turning" back time the avoidance of creating spacetime turbulence is a priori, but impossible to achieve.
 
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Should someone reverse time all they would learn is what has already happened (it was them who stepped on that bug.) It is impossible to change the past, although it is possible to travel to it.
That leads to predetermination. Your "future" is already in someone's else's past. If they can't change their past to change their present because for them "it already happened" then it must also must happen in your future, which means you are also powerless to change it, ego everything is predetermined.
 
But considering our limited access to all the mathematical potentials in play, for us the future is probabilistic at best (butterfly effect)...:?
The reply was addressing the claim that you could travel in time, but not effect events. If you follow that reasoning, then you also have to accept predetermination. It was not arguing that this how the universe actually works.

If you an consider a quantum probability approach, things can be quite different. For one, quantum uncertainty could also means that the past is as undetermined as the future; that there are multiple versions of the past that lead to our present just as there are multiple possible versions of the future. Such a model would side-step the grandfather paradox. Go back and stop your parents from meeting and you don't vanish ala Marty Mcfly, you just cut yourself off from any "future" where you were born. Travel forward from this point and you can only reach futures where you were never born.

Time travel is a fun idea to play with, but that is about it.
 
For one, quantum uncertainty could also means that the past is as undetermined as the future

Time travel is a fun idea to play with, but that is about it.
In that spirit, could we argue that the past is no longer probabilistic as all extant wave-functions at that time have collapsed and you cannot get back deeper in time than the collapse of the wave function which is responsible for expression in reality, no?
 
Hi again.

Even if someone were to travel at the speed of light, they will eventually slow to sub-light speeds. It's not FOREVER! :)
 
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