Arquivo da categoria: Física

Física foi meu primeiro amor. Esta categoria contém os postos mais próximos ao meu coração. Vinte anos a partir de agora, Se este blog sobrevive, Esta categoria provavelmente irá realizar meus conhecimentos mais duradouros. E 200 anos a partir de agora, se eu estou lembrado em tudo, será para esses insights; não para o tipo de pessoa que eu sou, o dinheiro que eu faço, nem qualquer outra coisa. Só para o meu primeiro e último amor…

Partículas e Interações

Recentemente, Eu dei uma palestra sobre partículas e interações para os colegas da minha filha que estavam planejando uma viagem a Desy, Alemanha e queria ter uma idéia do que tudo estava prestes. Como a minha primeira palestra deste tipo, Eu estava um pouco nervoso porque eu não sabia o nível, e de fundo, Eu deveria atrelar a conversa no. Eu não quero fazê-lo muito básico, que eu pensei que seria um desperdício de tempo. Nem eu quero fazê-lo demasiado técnico, que também tornaria inútil de uma maneira diferente.

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Sensory and Physical Worlds

Animals have different sensory capabilities compared to us humans. Cats, por exemplo, can hear up to 60kHz, while the highest note we have ever heard was about 20kHz. Aparentemente, we could hear that high a note only in our childhood. Assim, if we are trying to pull a fast one on a cat with the best hifi multi-channel, Dolby-whatever recording of a mouse, we will fail pathetically. It won’t be fooled because it lives in a different sensory world, while sharing the same physical world as ours. There is a humongous difference between the sensory and physical worlds.

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Problema do Livre Arbítrio

O livre arbítrio é um problema. Se todos nós somos máquinas físicas, obedecer às leis da física, em seguida, todos os nossos movimentos e estados mentais são causados ​​por eventos que ocorreram mais cedo. O que é causado é totalmente determinada pela causa. Então, tudo o que fazemos agora e no minuto seguinte é tudo pré-ordenado por eventos antecedentes e causas, e não temos controle sobre ele. Como podemos, então, têm livre-arbítrio? O fato de que eu estou escrevendo esta nota no livre arbítrio — ele é total e completamente determinado pelos eventos de tempos imemoriais? Isso não parece certo.

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What Does it Feel Like to be a Bat?

It is a sensible question: What does it feel like to be a bat? Although we can never really know the answer (because we can never be bats), we know that there is an answer. It feels like something to be a bat. Bem, at least we think it does. We think bats have consciência and conscious feelings. Por outro lado, it is not a sensible question to ask what it feels like to be brick or a table. It doesn’t feel like anything to be an inanimate object.

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Outros Conspirações conhecidos

A teoria da conspiração continua a ser uma teoria e forragem para os malucos até que seja completamente abertos. Nesse ponto, os malucos se tornar premiados jornalistas e os líderes que eram considerados heróis nacionais se tornam criminosos sociopatas. Tal é a inconstância da opinião popular, e por isso vai ser com o 9/11 conspiração quando se torna amplamente conhecido (se ele nunca faz) que era uma conspiração.

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The Origins of Gods

The atheist-theist debate boils down to a simple question — Did humans discover God? Ou, did we invent Him? The difference between discovering and inventing is the similar to the one between believing and knowing. Theist believe that there was a God to be discovered. Atheists “sei” that we humans invented the concept of God. Belief and knowledge differ only slightly — knowledge is merely a very very strong belief. A belief is considered knowledge when it fits in nicely with a larger worldview, which is very much like how a hypothesis in physics becomes a theory. While a theory (such as Quantum Mechanics, por exemplo) is considered to be knowledge (or the way the physical world really is), it is best not to forget the its lowly origin as a mere hypothesis. My focus in this post is the possible origin of the God hypothesis.

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9/11 Debunkers

Pessoalmente, one of the main reasons I started taking the conspiracy theories about 9/11 seriously is the ardor and certainty of the so-called debunkers. They are so sure of their views and so ready with their explanations that they seem rehearsed, coached or even incentivized. Looking at the fire-induced, symmetric, and free-fall collapse of WTC7, how can anyone with any level of scientific background be so certain? The best a debunker could say would be something like, “Sim, the free-fall and the symmetry aspects of the collapse do look quite strange. But the official explanation seems plausible. Finalmente, it is more plausible than a wild conspiracy by the government to kill 3000 of our own citizens.” But that is not at all the way they put it. They laugh at the conspiracy theories, make emotional statements about the technical claims, and ignore the questions that they cannot explain away. They toe the official line even when it is clearly unscientific. They try to attack the credibility of the conspiracy camp despite the obvious fact that it has the support of many seasoned professionals, like architects, physics teachers, structural engineers and university professors.

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Atheism and Unreal God

The only recourse an atheist can have against this argument based on personal experience is that the believer is either is misrepresenting his experience or is mistaken about it. I am not willing to pursue that line of argument. I know that I am undermining my own stance here, but I would like to give the theist camp some more ammunition for this particular argument, and make it more formal.

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9/11 – Motives for Mass Murder

In the first post in this series, we saw that 7 World Trade Center building was the smoking gun of a possible conspiracy behind the 9/11 attack. The manner in which it collapsed and the way the collapse was investigated are strong indications of a conspiracy and a cover up. Contudo, when I first heard of the conspiracy theory in any serious form, the first question I asked myself was why – what possible motive could any person or organization have to commit mass murder at this scale? I honestly couldn’t see any, and as long as you don’t see one, you cannot take these conspiracy theories seriously. Claro, if you buy the official story that the conspiracy actually originated in Afghanistan among terrorist monsters, you don’t need to look for any rational motives.

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Atheism vs. God Experience

I have a reason for delaying this post on the fifth and last argument for God by Dr. William Lane Craig. It holds more potency than immediately obvious. While it is easy to write it off because it is a subjective, experiential argument, the lack of credence we attribute to subjectivity is in itself a result of our similarly subjective acceptance of what we consider objective reason and rationality. I hope that this point will become clearer as you read this post and the next one.

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