quinta-feira, 13 de abril de 2017

A new fire for humanity.

  We live in a time that is like no other that you can think of. We have indeed developed our brains to be able to use and see the tools we make and rely on as extensions of ourselves, but in no other point in history have we gave those same tools the ability to be independent, to truly think, plan and learn by themselves, to be aware of their surroundings and even to have a gut felling regarding thinks that are simply too great to calculate. We now do!
  Over the curse of the next weeks we will be posing some thoughts about this great topic that is making so many heads turn around with the implications it adds to our future as a specie and even to what we can define has moral or worth of being called “a person”: artificial intelligence.
  Even though it is already among us, I think we can compare this phenomenon to the rise of the modern mobile phone were, in the beginning, we only had those rough bricks with a huge antenna and they were simply designed for a single task, and now we have this marvels of engineering and technology that put the world, and the whole known space, for that matter, on the palms of hands. No one could accurately predict the future that we have seen develop before us in the same way that no man is really sure about the future of this things in witch, the level the cell phone has reached will only be the start of the hole fun and fear. 

sábado, 11 de abril de 2015

How big infinity really is?

  Infinity is really big. Well, I only need to say that it is infinitely big.

  This is one of the hardest concepts that mankind has ever tried to understand. And, why is it so complicated? Because it is just too unusual! No one has ever seen an infinite road, and it is very hard to imagine! How do you do it? Do you imagine yourself walking on that road? Do you imagine it on the space? Because, the earth do not have space for a thing like that! But, does it means that space has space for it? If we consider that the universe is finite, how can an infinite thing be inside a finite one? If we consider that the universe is infinite, things go so crazy that you might need the help of the infinite “yous” that exist out there just to help you understanding it.

  The Hilbert Hotel is a paradox that was created to make us see the complexity of the concept of infinity.
  For a moment, imagine an infinite hotel, and that hotel is full. Suddenly a guest arrives and asks for a room. What does the hotel’s manager do? He can’t just say that they don’t have a room for him. And he can’t also put him in the last room for two reasons: the first one is that he can’t find it (since it is an infinite hotel), and second is because it is already occupied. So, what is the solution? He thinks and concludes that he can ask to each guest to go to the next room. For example, the guest in room number one goes to room number two, the guest in room number two goes to room number three, and so on. That is going to free room number one, and the new guest can now sleep in peace. This solution work of any finite number of guests, so, everyone can have a room in that hotel, even if it is full.

  But, what happens if an infinite number of guests ask of an infinite number of rooms? Now, the manager can’t ask to the person in room number one to go to the room number infinite* (*infinite is not a number, just a concept) because that person will never find that room.
It seems that there is nothing he can do, or is it? Well, he can ask to the guests that he already have on the hotel to go to a room that is not a room with an even number on the door. And, one that it is done, he can now put the infinite guests on the infinite rooms that are free (because the even numbers are infinite). Problem solved!

  But, what does he do if an infinite number of cars (each one with its infinity number of people inside) arrive and everyone asks for a room? The first thing to be done is to label the cars and the seats with infinite numbers. Once that is done, he can now ask to the person on the first seat of the first car to go to room number two, the person on the second seat go to room number four, the person on the third seat go to room number eight. What we is doing is asking to the people on the first car to go to de first number prime (two) powered by their seat number. So, a person who is seat on the fifth seat of the seventh car goes to room number 1419857 (17^5). With this system, everyone can have a room, leaving free an infinite number of rooms, because not every number is affected by this system.

 

We are starting to see the cool things that would happen if we live on an infinite earth with infinite people and infinite hotels, here, even full, there is always room for you.

  Here we just looked to the natural numbers, but we can’t forget that there are a lot of numbers we don’t talk about, like the negative ones, the fractions, those that are irrational, etc. So, we can say that we only talked about one infinite part of an infinite group.

domingo, 29 de março de 2015

A life in your hands



  Today, I took these photos. Is amazing to feel the weakness of that egg when compared with the hardness of the human hand. It makes me think about the phenomenon of life and the amazing complexity of it. Is hard to describe the feelings that filled me in that moment and this prove, again, that we live in wonderful world that have to be protected and preserved.

  Those eggs were from a frog, and there were thousands of them.





A picture is worth a thousand words

sábado, 28 de março de 2015

What can we learn with successful people?

  Successful people inspire us to be better, to follow their steps and try to reach their level. So, what do they all have in common? Witch are the traits that have been, in their opinion, the cause of their success?

  With the information of a lot of interviews, some traits were highlighted because of the amount of times that those were referred as “very important”.

  Well, one thing that all respondents have in common is that all of them love what they’re doing, and that lead us to the first step: be in love by the job or activity that you what to improve. It also should be your only job, because, if you want to be recognized by our skills in a certain area, you have to focus all your attention in that, otherwise it will not be easy.
  Has you might imagine, is very important to work hard, to push yourself to the next level and have always good and creative ideas, but you will only show your skills to the world if you serve the ones around you. You have to make them know what you’re capable of.
  And finally, you have to persist and fight for your dreams.

  So, never forget to be in love by your job, focus in only one activity, work hard, push yourself to the next level, be creative, serve the world with your service and persist because, success is not something that you achieve in one night.

sexta-feira, 20 de março de 2015

Facebook Page

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Visit it: https://www.facebook.com/pitalks

sábado, 14 de março de 2015

Let´s think about the unknown

 What is reality anyway? How can we say that we, our bodies, our mind is real?

 This thing we call life can only be a dream! We all know how dreams can seem to be so realistic. Or, even if this is all real, can we assume that things are the way we think they are?
 For instants, the majority of us think we have free will. But, if we think, are we sure about that?
For example, everyone knows cells don´t think, they don’t have a brain so they act in response to the exterior stimulus. So, I dare to say that cells act in a predictable and even “programmed” way.
If we assume this is true, that cells are, in fact, simple organisms that act the way they are programmed to, we can take this thought to another, more complex beings. Is a plant programmed? In other words, if we know the big variety of stimulus it is affected for, can we predict it´s behaviour? Is a dog programmed? Is an elephant programmed? Are we programmed? And if your answer is an immediate “No”, remember that our brain is just a big group of cells that together can do a lot, but they continue to be affected by the natural lows that govern the part of universe we already know about.
 The universe we already know about because, if you accept the idea of the possible existence of another universes in addition to our own, you can start thinking if the rules that govern those universes are the ones that governs our.
 Well, with so many things that do not have a real answer, is good to think about the ones we already know, like, the fact that this letter are black. Black that is the way we see it. The way we see it, but..., is our sight good enough for us to rely on? Is possible for a person to be colour blind his all life and never know that he is actually seeing things in a different way. So, how do we know that we all see the same colours in the same way? Well, not exactly in the same way, but in a very close one? I think we just can´t ... or can we?

 These are just a very tiny fraction of some of the questions that no one has an answer for (at least, an accepted one). And, like Descartes once said “I think therefore I am”, this if we consider that we actually think, but that stays for another day.