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The Hardest Logic Puzzle Ever

Three gods: A, B and C. One of them is True and he/she always speak the truth. One of them is False and he/she always speaks false. One of them is Random and … guess what!

You have three closed questions (i.e. the ones to be answered only „yes” or „no”) to figure out who is who. They do understand your language, but they answer in their own language. The only words you can hear from them is „da” or „ja”. You don’t know which of them means „yes” and which means „no”.

Want some hint?

  1. Think about logical conjunction in questions you are going to ask.
  2. Don’t ask similar/same questions to all three of them.

Try to solve it. When you give up, read the solution.

Dlaczego nieLOT

Lot odwołał rejs, którym miałem lecieć do Pekinu. Lot wykupiony prawie rok temu. Zapłacony prawie rok temu. Przez 8 miesięcy LOT obracał swobodnie moimi pieniędzmi, mimo, że usługa nie była zrealizowana. Na 21 dni przed wylotem dostałem informację telefoniczną, że LOT odwołał rejs. Zdarza się nawet najlepszym, a tym bardziej przedsiębiorstwom będącym w permanentnym kryzysie od lat. I nawet nie mam do LOT-u pretensji o odwołany lot. W końcu sami mają masę problemów z najnowocześniejszymi nielotami na świecie. Pretensje mam o to, jak zostałem potraktowany, jak bardzo bezduszny i arogancki okazał się przewoźnik, którego działalność kredytowałem przez 8 miesięcy.

Pani w call center zaproponowała zmianę terminu wylotu o dwa dni wstecz, bez zmiany daty powrotu. Niby fajnie tylko, że moja chińska wiza zezwala mi na 10-cio dniowy pobyt w Chinach, a w konfiguracji proponowanej przez LOT spędziłbym tych dni 12. Zmiana wizy odpada bo to spory koszt, ale przede wszystkim podwójna sesja koczownicza pod chińskim konsulatem – minimum 1,5 godziny każda. Nie, dziękuję – wystarczy mi na kilka miesięcy.

To może mogę wybrać inne daty podróży, tak aby okres pomiędzy wylotem i powrotem nie przekroczył magicznej liczby 10 dni. Otóż nie. „Wybrał Pan taryfę, w której zmiany nie są możliwe” – usłyszałem znudzony głos w słuchawce. Fakt, to w takim razie dowieźcie mnie proszę do Pekinu 23 kwietnia, skoro zmiany nie są możliwe. Ja naprawdę nic nie chcę zmieniać – to wy zmieniacie.

Przespałem się z problemem. Nazajutrz kupiłem bilety w Lufthansie. Koszt był o 1000 złotych większy, ale korzyści zdecydowanie przeważają. Po pierwsze, zredukowałem znacznie ryzyko, że za dwa tygodnie zadzwoni do mnie znudzona pani z LOT-u i obwieści, że jednak nie, w tym nowym terminie LOT też nie poleci. Po drugie, zredukowałem ryzyko, że w trakcie mojego pobytu w Chinach LOT zwinie interes, a ja będę zmuszony wracać koleją transsyberyjską przez tydzień. Tylko raczej nie. Po trzecie, moje dzieci będą miały zapewnione osobiste centrum rozrywki z monitorem w poprzedzającym fotelu, i wybór gier i filmów w dowolnym momencie, a nie quasi kino z centralnym ekranem i ustalonym repertuarem, jak to jest w lotowskich Boeingach 767.

No i wypróbuję A380. Miałem wypróbować B787, ale zdecydowanie wolę latać czymś… co lata.

No odchodne LOT zafundował mi ostatni kopniak. Pieniądze zwrócą mi w przeciągu dwóch tygodni. Dręczy mnie ta niesprawiedliwa asymetria: jak Bartek płacić Kalemu to natychmiast, jak Kali zwracać pieniądze Bartkowi, to po dwóch tygodniach. Jeszcze skredytują się chwilkę, mimo że dołożyłem sporo do ich interesu, a sam miałem z tego tylko kłopoty. A bardziej prozaiczny powód, że jest to nie fair jest taki, że gdybym nie miał pieniędzy, to nie kupiłbym biletów w innej linii już teraz, a za dwa tygodnie – na tydzień przed wylotem, mogłyby mnie już nie być na nie stać – ceny będą zaporowe. Odczuwam to jako złośliwą zagrywkę: „nie chcesz lecieć z nami, to nie polecisz w ogóle”. No więc polecę. To z LOT-em nie polecę w ogóle. Prywatnie. Przynajmniej dopóki nie zaczną się troszczyć o klienta.

To nie drogie paliwo jest problemem LOT-u. Ani Dreamlinery. To brak szacunku dla swojego chlebodawcy – klienta powoduje, że LOT jest na skraju bankructwa. Czego mu życzę, jeśli nie zmieni swojego stosunku do pasażerów.

Shanghai Reflections part 2

This is another part of my reflections that I had during and after visit in Shanghai. The city made so deep impression on me that I still keep thinking on it. I don’t know exactly what is the reason but I suspect that the difference between what I expected to see and what I have seen was so huge that left a dissonance in my mind.

I expected to find a third-world city with unregulated traffic, unsolvable problems with infrastructure, poverty visible everywhere and people begging on streets. Instead I’ve seen the future. Now, living in Warsaw I feel like I was on the suburbs of civilization. Europe, although mighty and rich, seems to be an old man using it’s pension to live this few years until death comfortably. The centre of civilization will not move. It’s moved already. It’s there in China, in Indonesia, in south-eastern Asia. Maybe in India, but I have never been to India so I don’t know.

We in Europe strive with unions, with nationalisms, with secularization or fanaticism. We try to assimilate minorities. But focusing on these tasks we lose this basic fact, that modernization is going on in the World. We don’t have the momentum.  Maybe China is still underdeveloped. Maybe it still cannot be compared to the most developed countries in the World. However the dynamics of China growth is totally different. While we, so proud „developed” world grow 2-3 % per year (optimistic, post-crisis calculation) China grows 10%. They chase us and I am sure they will overcome very soon!

Should we be afraid of China? I don’t know. What I know is that I felt normal in Shanghai. There was no special hospitality nor any hostility. The common feeling was that if you accept and adjust to some specific rules you just disappear in the crowd as one of the Shanghai citizens. And it doesn’t matter that you are white. Or black. Or green :)

They are greener than we think. I refer to ecology. We think that they don’t care. Actually they do, but they are on the level that Scandinavian countries were 40 years ago. Poland is, I estimate, 2-5 years behind China. They are aware and they try to balance their development needs with ecological demands. They simply need time, time that our planet does not have. It’s easy to criticise when someone forgets how long the eco-consciousness was growing up in developed countries. They are required to do the same journey during drastically reduced time. It’s not that easy.

And the Nobel prize to Liu Xiaobo. Is it possible to force China to accept western standards? Why should they? Because we think it’s right? Human rights are important and I agree that they should be a foundation to build the rest of law system. Do we in western countries agree what are the human rights? I ask for in vitro or abortion. Do we agree all on the above? I don’t think so.

Americans tried to introduce what they think was democracy in Iraq. And they failed. Of course they wouldn’t try the same on America First Banker. It’s easy to see the World in black and white. What about cultural differences? Not to mention Confucianism…

One more example. I have no personal experience with crossing US border but I’ve heard many stories about it. The picture I have in my mind is that this is extraordinarily humiliating. Everyone is treated as a foe. Everyone can be turned back without right to defence. And unpleasantnesses start when man applies for US visa. It starts with detailed interrogation and the result is unknown.

Applying for Chinese visa and border control is only an administrative process. Moreover you can assess the work of immigration clerks by pressing one of four buttons ranging from totally satisfied to dissatisfied. Entering communist and so „totalitarian” country is really easy and you can give your feedback!

I really admire US for the system of democracy they have created. But they are not perfect. Nor the Chinese are. Nor we all are. I beg for more tolerance and more colourful World.

Lolcats…

Looks like I am not 100% resistant to stupid and funny things you can find in Internet. Here they are: lolcats…

funny pictures of cats with captions

funny-pictures-cat-asks-you-to-open-door

funny pictures of cats with captions

funny pictures of cats with captions

funny pictures of cats with captions

funny pictures of cats with captions

funny pictures of cats with captions

funny pictures of cats with captions

funny pictures of cats with captions

In the case of the above, last picture actually I have some coment on that: „As usually on late autumn cats gather on trees preparing themselves to fly south...”

Few words about my new activity

Let me enlist few assumptions regarding my blog activity. I will try to use English language in almost all my posts, however it may happen that some posts in Polish appear. I believe that it is better to say some meaningful words in any language than not to say anything because of lack of language skills or simply being tired…

My posts will appear with different frequency. I am not going to become an addict. I am also not going to limit my essays to few sentences. My intention is to describe what actually is of my great concern, my thoughts regarding world, society, science, and especially human behaviour.

I have started this blog because of being disappointed of what social portals like Nasza Klasa or Facebook offer. I was expecting something more than „yet another” discussion list + photo album + kind of e-mail system. To be honest I don’t know what more I was expecting. Maybe I was a little bit too trustful in Internet gurus’ ideas, so I thought about some really revolutionary means of communication. Actually I feel that such portals flatten and trivialize this part of my life which is devoted to discussions with my friends. To be more specific: it’s sad that communication within such portals is limited to short basic sentences out of context. „Just came back home after long trip…”, „Going to party tonight…”, „What’s your favourite brand of tissues…”,”What kind of mathematical function you are” and tons of equally meaningless pieces of sequences which look for me more like tired-to-death man half-dream, than bright idea that I want to pass to my friends. This is not even „stream of conscience”. Not even any idea, this is something to fill out a time without any aspiration. Maybe that’s the way it is supposed to be, however it doesn’t mean that I accept it. That’s why I started this blog.

I am not pretending to be the most enlightened one. I don’t want to teach, to lead, to say people how they are supposed to live. I want to share. Maybe someone will adopt something for him or herself. That’s the way I learn, and I enjoy it.

Last thing. Some of my posts will be open for commenting, others not. Please remember that this is my blog, so I decide. Don’t expect democracy here, but relay on my respect to others.

Justification

I have started this web page as a result of my frustration born from using Facebook and nasza-klasa. Why? I’ll write it in next post.

I would like to avoid posting short notes present normally on Facebook. Not here. This one is probably the shortest one I intend to leave here.