Jigsaw puzzle by Nina Torr
Buy online
Paradox-free Time Travel Is ‘Logically’ Possible, Say Physicists Paradox-free Time Travel Is ‘Logically’ Possible, Say Physicists
i
A wormhole in the film “Interstellar” (dir. Christopher Nolan)
Science

Paradox-free Time Travel Is ‘Logically’ Possible, Say Physicists

Kevin Dickinson
Reading
time 5 minutes
Kevin Dickinson:
the columnist at Big Think and Big Think+.

Grandfathers, take heart. You’ll survive the paradox that’s been gunning for you since the 1930s.

Science fiction requires its fans to suspend their disbelief, and there’s no greater ask in that department than when trying to enjoy a time travel story. Writers twist their plots into Gordian knots to explain how time travel could logically work in their futuristic worlds. When the simplest explanation is, it probably doesn’t.

Many physicists have agreed with that assessment. Einstein wondered

Information

You’ve reached your free article’s limit this month. You can get unlimited access to all our articles and audio content with our digital subscription. If you have an active subscription, please log in.

Subscribe
Kevin Dickinson:
the columnist at Big Think and Big Think+.
Publish date: 22.10.2020

Also read:

The Basis of the Universe May not Be Energy or Matter but Information The Basis of the Universe May not Be Energy or Matter but Information
Science

The Basis of the Universe May not Be Energy or Matter but Information

Philip Perry
Philip Perry:
An American writer and blogger.

In this radical view, the universe is a giant supercomputer processing particles as bits. 

There are lots of theories on what are the basis of the universe is. Some physicists say its subatomic particles. Others believe its energy or even space-time. One of the more radical theories suggests that information is the most basic element of the cosmos. Although this line of thinking emanates from the mid-20th century, it seems to be enjoying a bit of a Renaissance among a sliver of prominent scientists today.

Continue reading