Learn more about motivationandinspiration with this collection
How to handle conflicts
How to identify and regulate emotions
How to develop self-awareness
We already know that travelling very fast will result in time dilation, so we know it's possible to travel into the future just by travelling very fast.
We can travel quite a way into the future if we can travel at some reasonable percentage of the speed of light.
We also know how to travel into the past. We can do that by using wormholes, which are short cuts through space-time.
189
625 reads
MORE IDEAS ON THIS
Our birth is out there in space-time. Our death, too, is in space-time. Every moment of our lives is out there, somewhere, in space-time.
So says the block universe model of our world.
According to the block universe theory, the universe is a giant block of all the things that...
207
1.96K reads
It often seems as though where we are "today" is present, and "yesterday" is past, and "tomorrow" is future.
It also seems the present moment changes too — after all, tomorrow it will seem as though tomorrow is present, and yesterday it appeared yesterday was present!
So from ...
191
985 reads
Think about the idea of "here". I am here. You, while reading this, can truly say "I am here", even though your "here" is different to mine.
On the block universe model, talk about the "present" or "now" works just like talk of "here".
Remember last week when you said...
189
867 reads
Nothing a time traveller does changes anything in the block. Instead, what the traveller does at any time makes that time, and later times, the way they are.
That means that we know that some things we attempt to do in the past, fail. We know that Hitler r...
196
583 reads
How can this be?
The block has four dimensions: three spatial dimensions — say length, height and width — plus a fourth temporal dimension, or time. Or let's make it easier, by visualising the block model of our world as a three-dimensional rectangle, or cuboid.
191
1.67K reads
Two of that cuboid's dimensions (let's say height and width) represent two of the universe's three spatial dimensions.
Leave out the third spatial dimension in the above diagram (the length) —and replace it with time. At one end of the cuboid is the big bang. At the other is th...
189
1.06K reads
Bearing this in mind, it is possible to see how to make sense of the idea of past and future.
Just as on this model “now” picks out whatever time I happen to be located at, “past” picks out any time (or events at those times) that are earlier than my location, and “future”...
186
678 reads
We’ll get out of our time machine and start walking around. We’ll breathe the air and chat to people.
Obviously, this will have effects on the time we travel to. We’ll tread on ants; we’ll talk to people from that time; we’ll pat horses, and feed donkeys and so on.
We’ll act, ...
190
621 reads
If time is just another dimension, a lot like the spatial dimensions, does that mean we can travel in time?
The short answer is yes.
Of course, things are way more complicated than that. Travelling in time is clearly much more difficu...
185
665 reads
No.
That would create a contradiction, and there are no contradictions.
Remember, on the block universe model, the past is no different than the future or the present.
Everything is relative: ...
192
680 reads
Let's recap.
What we do tomorrow makes tomorrow the way it is, and the way it always has been. What we do in the past makes the past time the way it is, and always has been.
If we travel to the past, we are part of the past. Importantly, ...
192
602 reads
Since we are always located wherever we are (that's trivially true), everyone is located in the present, just as everyone is located at the place they call “here”.
According to the block universe view, time or temporal relations of “earlier than” and “later than”
185
722 reads
CURATED FROM
abc.net.au
13 ideas
·11.7K reads
Would you time-travel just to make things as they are, if you could not change things as they are? Not really a question.
“
Related collections
More like this
The majority of emotional suffering is a direct result of too much mental time travel.
Mental time travel is the amazing ability we have to think about the future with our imagination or relive events from the past out of memory. While this can serve as a warning and help us plan and prepar...
Over 50 scientific papers are published a year on the idea of time travel. Even though they will probably never solve the problem of time travel, they still love to talk about wormholes and dark matter.
Einstein, with his theory of relativity, spoke of time as a fourth dimension....
Science fiction is flanked by science, without ever neglecting fantasy. You get to a point where you can't tell where science ends and science fiction begins.
Then your fantasy appears and you begin to gallop in a universe you do not know and you are prey to the wildest imagination.
Read & Learn
20x Faster
without
deepstash
with
deepstash
with
deepstash
Access to 200,000+ ideas
—
Access to the mobile app
—
Unlimited idea saving & library
—
—
Unlimited history
—
—
Unlimited listening to ideas
—
—
Downloading & offline access
—
—
Personalized recommendations
—
—
Supercharge your mind with one idea per day
Enter your email and spend 1 minute every day to learn something new.
I agree to receive email updates