Every moment of our lives takes place in space-time. Our birth, our life, our death… At least blocks the universe theory according to that. To explain it better; According to the block universe theory, the universe is a huge block made up of everything that happens at any time and in any place.

According to the block universe theory, which states that the concepts of past, present and future are equally real. Time periods exist simultaneously in the universe. This brings us to the idea of ​​time travel. Let’s confuse you a little more.

Let’s imagine the universe as a block.

Let’s consider the leftmost part of the block as the beginning of the universe (the Big Bang) and the rightmost part as the end of the universe (the apocalypse). What we call past tense, present tense and future tense; everything that has happened is happening and will happen has taken place or will take place between these two parties. resources.

The block is full of events. Where these events are located in the block represents their location in space-time. Birth, death, the time you are in as you read this content… It’s all somewhere in this blog.

Time does not pass in the block universe.

We think of the present as ‘now’, the past as ‘yesterday’ and the ‘future’ as tomorrow. Moreover, the present seems subject to change. In short, from our perspective, time seems to pass. However, according to the block universe theory time does not flow.

There is no specific present moment, and ‘past’ and ‘future’ moments are relative. Consider the action of ‘being here’. As you read this, you can say, “I am here,” even if your “here” is different from mine. Here is the block universe theory Talking about ‘now’ is like talking about ‘here’.

Let’s explain by giving an example:

Yesterday to your friend who came over for coffee. “You’re finally here!” you can say. Maybe someone else said the same thing hundreds of years ago. Both are true because the only point of talking about the now is talking about where you are in time. Always, wherever we are; everyone is present in the moment. Just like everyone is in the place they call ‘here’.

According to the block universe theory, there are temporal relationships.

Temporary relationships, whatever no matter where you are valid. For example, there is a dinosaur in front of your cat nearby. This relationship between the dinosaur and your cat is valid whether it takes place before or after.

The idea of ​​past and future also gains meaning in this way. Just as ‘now’ is in the present tense, The past is also at an earlier point in time.

So can we travel in time?

If time is another dimension, very similar to spatial dimensions, we can travel through time, but of course things are much more complicated than that. According to the block universe theory, we can travel to the past using wormholes in space-time. However We cannot change the past because the past is no different from the present or the future.

Because time is relative, so too are we in the past comes for someone else It will happen. So when we travel to the past, we travel to someone else’s future. This means that the past will not differ from the present.

If the circuits are blown, let’s recap.

When we go back to the past, we become part of the past. More importantly, we were always part of the past. events on the block, they are always there and unchanging. As a time traveler you do not suddenly appear in the past. It is always in the past tense.

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