Traveling in time is not the same thing as affecting the past.

 

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Traveling in time is not the same thing as affecting the past. 

Time travel paradoxes and mistakes about them are a good example of the things where we must realize that sharpness is the most important thing. First, we must realize that things like traveling to the past and affecting it are different things. If we just travel in time to the past and observe things we might have not a very big effect on our environment. 

Second, if we want to affect the future we must choose the scale where we want to effect. So don't shoot anybody, is the thing that might be the time traveler's golden rule. We might accidentally shoot a person, who establishes our bloodline, and there is a possibility that we will vanish because cyclic time is only theory. 

And the thing is that we cannot probably effect very large-scale things alone. So if we can build a time machine, could we deny things like pandemics? The fact is no, or that thing requires extremely large-scale work to locate the first infected person and deny the exposure. And the thing even in large-scale pandemics is we don't know is the first person who went to the hospital the first person, who got the virus because of symptoms are different in every case. 

So even we would get the name of the first person, who went to the hospital because of the virus, there might be many more infected people, who have thought that they had the flu. And this thing is one of the paradoxes of the time travel. If we believe that everything can be solved by creating a time machine we are wrong, or it is needed extremely large-scale time traveling. 

A time machine would make us rich. 

What if we would get the newspapers with financial pages from the future in our hands? What if you can get the financial times from the future in your hands? What if you will get the archives of the stock marketing and stock marketing advantages of the next 100 years in your hands? Those files could make you rich because they allow you to know the marketing courses before others, and make the right investments all the time. 

If a time machine would exist, it can make us rich persons if we own that machine. That thing happens like this. The time traveler would travel to the past and takes the newspapers with financial pages to the past, and then start to make investments. In that case, we would know exactly, where we would invest our money. So people could call that thing with the term "better than inner circle trade". 

The thing is that the time traveler must just take diamonds and gold to the past because nobody would use Euros or Dollars at that time. And in the past, our time traveler must just change those things to money, take the next day newspaper from the briefcase, and then start to make investments. 

Image: http://www.astronomytrek.com/5-bizarre-paradoxes-of-time-travel-explained/