Why God as an old man actually is a realistic scenario

Contrary to what Einstein proclaimed, time is not an illusion. The linearity of time may actually be the only constant of physics across multiple universes.

Time travel, nevertheless, is a reality. But not with a technology that would propel matter at velocities faster than the speed of light, because matter disintegrates long before it moves that fast.

On the other hand, information is perfectly comfortable at that rate of movement. This is because information in computers travels via electrical signals or light, which propagate at speeds approaching the speed of light.

Time travel doesn’t move matter backward along a linear scale. Instead, it resolves matter into information and transfers it to a current position.

A peculiarity of time is that while it is monodirectional and linear, it has endless width. The number of events that can happen simultaneously is unlimited.

So, whenever time travel copies and reconstructs a reality of the past based entirely on information for the time traveler to be inserted into, it creates a parallel present, with its own future, in its own universe.

To answer Stephen Hawking’s question as to where the tourists from the future are: time travel does not consist of round-trip journeys. Once a past time has been recaptured and transformed into a present time in a new universe, the time traveler cannot normally be aware of the future in the universe from which they departed, nor can they return there. Rather, the new parallel universe has its own future. There is no grandfather paradox here.

However, for humans who have already arrived in the future, traveling to the past may not be an attractive option. What would be the purpose of that? Sightseeing? There are better technologies for this purpose, with predictable outcomes, such as 3D history tours. Time travel into the past robs any individual of the amenities of the future, including time travel technologies themselves.

But at its core, time travel is the same as modifying the past to create a better present. Not as Orwellian propaganda, but for real.

Because anytime the past is modified, the present becomes a new bubble universe, with its own distinct future.

The future of time travel, and this is how it will be done