Time Travel

[Bollo]

I have a Physics PhD so say with some confidence that Quantum Mechanics and General Relativity are both #@&*ing crazy.

 

[Mad Doug Biker]

I've never thought the 'paradox problem' with regards to time travel was ever a problem at all.
Whatever present you come from will only exist as it is because of past events.
If you to go back and change something that will merely be the past that has enabled you to actually go back and change things.
So that begs the question, is the future predetermined?
In a way it is. Certain events WILL happen tomorrow. Whatever happens today will bring them about. Just like what happened yesterday, caused today's events, and so on back forever.
If we could somehow take a snapshot of tomorrow we could say for certain that is actually what will happen. So no matter what decisions we make or paths we take it will inevitably lead to what we can see in that snapshot.
So we go back in time and what we think we are doing is changing history when all we would be doing is enabling the present.

What I want to know is, is that now discarded past a parallel universe or something?

Maybe I am overthinking it and still thinking of time as being only one line, hence 'why would you remember or know?' Etc etc.

 

[colly]

What I want to know is, is that now discarded past a parallel universe or something?

I'll get back to you on that.

 

[stephec]

Well, get your finger out and finish the sequel.

He did that in 1957 but accidentally sent the manuscript to the publishers in 2124.

 

[Deleted member 1258]

Box or line?

https://viralonce.xyz/present-and-future-exist-simultaneously-according-to-this-new-theory/

 

[Drago]

I'd go back to the 70's, find out the truth about Lord Lucan's moustache.

 

[classic33]

What I want to know is, is that now discarded past a parallel universe or something?

Maybe I am overthinking it and still thinking of time as being only one line, hence 'why would you remember or know?' Etc etc.

Like being on a road with a crossroads ahead, your path diverges and you follow the road you decided on.

Until you get to the next crossroad or junction, where you'll have to decide again which way to go. There's an infinite number of crossroads and junctions you could come across.

 

[PK99]

I'd love to learn more about it and the physics, I understand most things in theory, but I am rubbish at maths, so that's me bummed I guess.

I am/was a physicist (Manchester74-77) I too was rubbish at maths, but my conceptual side was good. I could not even begin to think about Doing the equations of the shells of an atom, but give me the equations and I could SEE the shapes.

Many years later when I retrained as a Garden Designer (looong story) I realised that my spatial awareness was off the scale. I could take a 2d drawing and walk into the 3d space where the garden would be built and walk someone through it in fine detail. Some people I trained with were "3-dimensionally-illiterate" - my plant knowledge was crap, but hell could I read a plan!

Don't give up there are different ways of doing physics.

 

[Accy cyclist]

A bit spooky but I'd like to go back to a family gathering from decades ago. Not any particular one just any, where most if not all of those there are no longer here. Would I go back as me now, or me at the time of the event? 🤔 If it was the latter I'd have to play along, taking to my relatives like nothing unusual was happening and thinking wow, I'm talking to my dad (for example) who's been dead for 21 years, yet he doesn't know it. If it was the former I'd have to eventually say to them that I'm their son, grandson, cousin, nephew, friend, but I've come here from quite a few decades in the future and I'm very sad to tell you that you are all dead.

 

[Drago]

I am/was a physicist (Manchester74-77) I too was rubbish at maths, but my conceptual side was good. I could not even begin to think about Doing the equations of the shells of an atom, but give me the equations and I could SEE the shapes.

Many years later when I retrained as a Garden Designer (looong story) I realised that my spatial awareness was off the scale. I could take a 2d drawing and walk into the 3d space where the garden would be built and walk someone through it in fine detail. Some people I trained with were "3-dimensionally-illiterate" - my plant knowledge was crap, but hell could I read a plan!

Don't give up there are different ways of doing physics.

We're a weird lot. You're a physicist turned gardener, my masters is in celestial mechanics (fortunately I am good at maths) and I ended up hitting people with a stick for a living.

Any actual practicing astronomers or physicists probably trained as pastry chefs!

 

[ClichéGuevara]

We're a weird lot. You're a physicist turned gardener, my masters is in celestial mechanics (fortunately I am good at maths) and I ended up hitting people with a stick for a living.

Any actual practicing astronomers or physicists probably trained as pastry chefs!

Are you still on call in case the moon breaks down?

 

[HMS_Dave]

I'd go back to the precise point in which the Mullet was invented and shoot the inventor.

 

[ClichéGuevara]

I've never thought the 'paradox problem' with regards to time travel was ever a problem at all.
Whatever present you come from will only exist as it is because of past events.
If you to go back and change something that will merely be the past that has enabled you to actually go back and change things.
So that begs the question, is the future predetermined?
In a way it is. Certain events WILL happen tomorrow. Whatever happens today will bring them about. Just like what happened yesterday, caused today's events, and so on back forever.
If we could somehow take a snapshot of tomorrow we could say for certain that is actually what will happen. So no matter what decisions we make or paths we take it will inevitably lead to what we can see in that snapshot.
So we go back in time and what we think we are doing is changing history when all we would be doing is enabling the present.

I love the paradoxes. I guess the most well known is the one where if you go back and kill your parents before you were born, how come you existed to do it.

Another involves taking a book of Shakespeare's plays back with you and giving them to a Young Bill. He then copies them, and over time they end up in the bookshop you got them from, for you to take back. The question is, who wrote them?

 

[Illaveago]

Its all to do with the paradox.

I take them when I have a headache!

 

[Ming the Merciless]

I think the view now is that changing the past spawns an alternate future and there are no paradoxes.