Information paradoxes

Woody Allen

As I have mentioned before, time travel, if it were possible, would cause many paradoxes. In a previous post I mentioned the paradox of unsourced information, which can be summarized thus:

A time traveler who lives in time 3 knows that a person A said or did something at time 2, prior to time 3. 

The traveler goes back from time 3 to time 1, prior to time 2, where he meets A. 

While they are together, the traveler suggests person A the idea of ​​doing or saying what he knows that person will do or say in the future, which has not yet taken place. 

Whose idea was it originally? Not the traveler’s, because he learned it from the history of person A at time 3. Not from person A, because the traveler suggested the idea to person A at time 1. 

The information in question has come out of nowhere, without anyone having thought it out.

The following diagram explains it.

Fires, bonfires and arson

Plastic contamination in the sea
(Source: Science News)

In the BBVA magazine of January 2020 there is an article entitled Top Ten, which lists 10 measures we can all apply to curb climate change, the first of which is this:

Committed waste treatment: ...in the next 30 years, 12 million tons of plastic waste will accumulate in the environment. When you go shopping, take a folded cloth bag...

It is true that, with our excessive use of plastics, we are turning the world into a dump, even the oceans. It is true that we must do something to avoid this. But since when contamination with plastics is a cause of climate change? We should learn to make distinctions, and correctly apply names to those phenomena we must face.