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Well, I think the 2. postulate is clear: it is about the emitter of light. The location you cite seems the derivation to me, that it also means that the velocity of light is the same for all observers. I am over-asked. (Is that English?). I assume Einstein wanted to start with postulates as close to the normal ideas of physics in his time. Independence from the emitter must not have been a problem, as waves propagate with a fixed velocity in it medium. But how he gets at independence of the observer is not clear to me.

Well, the definition of a description is different from a definition of a definition. If you know what I mean...

Well, I think it is best to let Einstein speak for himself: So in the second postulate he really is referring to the emitter only. I assume this excludes two (logical) possible scenarios: Light is moving in a medium, like sound. A jet close to the velocity of sound will 'see' the sound moving slower from him in the direction of his flight. If light exists of particles (material) the velocity of the emitter should be added. I found it always interesting that in popular explanations usually the observer is considered, not the emitter. Wonder why. Because it is easier to explain?

More or less. Therefore I referred to the curriculum of academic philosophy: just lookup what is done at university under the flag of philosophy. Then, if one still wants a definition, it should match these topics. But you are right, I would prefer a description above a definition of philosophy. Which is what I did in my first posting in this thread.

Can you please clarify your question? Which spectrum? There is no spectrum from libertarian free will to compatibilist free will, so it seems you are introducing a new topic.

But today that would be the demarcation between science and pseudo-science. Would you call Samuel Hahnemann, the grounder of homeopathy a scientist? If Thales was one, then he was one too. Hahnemann had a method (even if it was very incomplete, and therefore lead to wrong conclusions). Can you give examples of such 'philosophical laws'? I did not find a definition of philosophy on the Charles Sturt university. I am bad at googling, or it really isn't there. Can you provide a link and citation?

I think it was clear that I do not consider him a scientist. He made his self no ideas about methodology, like Galileo or Francis Bacon. He is always mentioned in history of science and philosophy because he was the first to explain the world based on natural and rational principles, not on the whims of gods. I know. But is a bit funny to say 'believe' here, when you can just look up the curriculum of philosophy of any university, and see what the topics are. It is like saying 'I believe that the sun is a big burning sphere of coal'. It is not a question of belief (even when it is meant courteously), you can just look up what the experts say. In the case of philosophy you can just look what the contents of the academic disciplines are. Your description ("philosophy deals with the most fundamental issues while science deals with the issues that based on the fundamental issues. This means the laws that govern all science issues are based on the fundamental laws that govern the whole universe. The study of philosophy is to look into these fundamental laws.") has nothing to do what is presently done under the flag of 'philosophy' at universities.

We have compatibilist free will. It is based on (sufficient) determinism. We do not have libertarian free will. It is contradictory with determinism. Randomness is no option as explained in my posting above.

Right. But what would free will be, when it was detached from what you are? So of course 'they don't just appear all of a sudden'. That is not a serious criterion for free will. Which ones? These? Do you you belong to these people? If you do, you are wrong. Randomness has nothing to with free will. Just imagine all your actions would be random. What would they have to do with your motivations and believes? If they have nothing to do with what you are, how can one recognise his actions as really his actions? How can this be free will? Free will has nothing to do with quantum reality (at least not more as it has to do with lifeless, purposeless entities). And I think the answer can be known, even when one always can say 'depends on what you mean with free will'. But I think philosophy has already provided the answer, by showing what kind of free will we do have, and which we don't. I am also pretty sure that the kind of free will we do have (compatibilist free will), is enough as a basis for our moral and legal praxis.

'Believing' what philosophy is has no place here. See the curriculum of some philosophy departments in philosophy, and you can get a notion of what philosophy is today. And in another way you already got a very good answer on reddit. TychoCelchuuu gave you there a list of philosophical topics that simply do not 'deal with the most fundamental issues'. Considered by whom? Not by me. Thales was the first to use a rational principle to show how he thought nature was buildup. For the rest he used Babylonian observation lists to predict a sun eclipse. That is a great feat, but I think one should consider him as a proto-scientist. ... it is a good overview. Thank you. Yeah, funny isn't it? And both expressed the importance of observations as instrument to develop knowledge.

Science tries to understand reality. Philosophy reflects on our way of thinking about reality: it tries to find (hidden) assumptions behind our way of thinking, and remove ambiguities in the concepts we are using in our thinking. For more, see here.

Ah! On which university did you study philosophy?

How do you think philosophy differs from other inner activities, like e.g meditation, gaining self-knowledge, doing mathematics?

I assume it was Immanuel Kant, so not a Greek philosopher, and doesn't begin with an 'A', but at least has an 'A' in it. See here (huge pdf), pages 470 (483 in the pdf) and 471:

I do not agree. In the first place it is not 'rhetorical shorthand', at least not for neuronal activity. Scientists and philosophers use the word 'consciousness' already an eternity, without having any idea about how the brain works. If it is shorthand, then only for what all experiences (seeing, hearing, thinking) have in common. In the second place even if we have no definition everybody agrees upon, we still all know more or less what we are talking about. E.g. if you say that consciousness has no causal impact on the brain, you seem really to be saying something meaningful. Maybe you did not understand what I was expressing with the hardware/software comparison. E.g. I work as a database administrator, and so I work with 'databases', 'tables', 'indices' and 'user accounts'. I could not do my work if I had to understand it in terms of the movements of electrons and electron-holes through semiconductor circuits. The higher, more abstract level is the essence of my work. An Intel-Engineer would not understand a single thing of what I am doing, if he had to understand it on the level he daily works with. But no question that without his semiconductor chips, my databases could not exist. So, yes, consciousness is rooted in in the hardware of the brain, but we will never be able to understand it, if we stick to the lowest neuronal level. We must be prepared to move to higher and higher levels, where small networks of neurons have functions, further networks of functions give rise to networks of networks that at the highest level even have meanings, intentions, and in the end consciousness. Except that 'love' is no conscious person. In your comparison there is no need to explain a phenomenon ('love changes the world') that needs explaining. But we want to understand consciousness. Maybe, maybe not. I am saying: - consciousness has causal impact (because it is implemented in the physical brain) - we have control over our environment - we have free will (because we often can act according to the wishes and beliefs I am myself conscious of) (None of the three is meant to read as absolutes: it does not mean that we are conscious of everything, that we have absolute control over everything, or that all we do is based on free actions. (Just in case dimreepr shows up here...)) But I do not think you see this just as a question of perspective. On the other hand, we share our naturalistic viewpoint. We don't need a soul or any kind of magic for understanding consciousness.

Yes, of course. Explicitly you of course do not believe in a soul or something. You are a naturalist, just as I am. We do not allow for 'magical interventions'. The problem is that epiphenomenalism, the view that consciousness is caused by brain processes but has itself no causal impact in the world (your viewpoint), and your question to me ('by what specific alternative mechanism can consciousness itself have the type of causal impact on the actual world around us?') presuppose consciousness as separate entity. If you see the brain and consciousness as just different stances to the same processes, the problem is gone. But then we are justified to say that consciousness has causal impact, not on the brain (that would be saying that rain affects water falling from the clouds; that makes no sense of course, rain is water falling from the clouds), but on what we do. And then it becomes relevant for the topic of free will, (which in the end this thread is about).

By being implemented in the hardware of the brain. If this does not satisfy you, let's rephrase your question to the terrain of computers: If you move away from the silicon physics perspective I've been treating as both central and foundational to this issue, then by what specific alternative mechanism can software itself have the type of causal impact on the actual world around us you're mentioning above? Nobody denies that computers are based on sound physical principles. Nobody denies that the pattern of pixels on the screen are caused by the program running on the computer. The problem you still have is that behind your question lies a presupposition: that consciousness is somehow separate from the brain. It isn't, just as the running software is not separate from the processes in the computer. There is just one system, seen from different stances.

No, we can't be both right. I say that consciousness can have causal impact, and you say that it cannot.

Italics by me. No. It is the conclusion one must draw from the mere existence of the article. Let's slow down: epiphenomenalism states that the brain causes consciousness, but that consciousness in itself causes nothing. If that is true, it means that if humans are not conscious at all, we would not notice. We would have what is called a philosophical zombie. A philosophical zombie is a human that behaves exactly as we do, but has no consciousness. But of course this cannot be: the authors try to explain consciousness, so they know they are. A philosophical zombie would never write an article about consciousness because he doesn't have it. (At most what he could do, if he is a scientifically inclined zombie, is trying to explain how humans use the concept of 'consciousness' in their discourses.) So what I state is that the mere existence of the article can only be explained by the fact that consciousness has causal impact in the world: otherwise nobody would write such articles. The article defends a self-refuting standpoint. So the only possible conclusion is that consciousness exists, and has causal powers. But that does not mean we must look for a soul in the brain, for some unexplained source of causality which has no causal foreplay on its turn. we must only state that certain classes of processes in the brain are consciousness; the processes do not cause it. A comparison would be a movie on TV. If I ask you, after the movie, if you liked the story of it, you would not answer with 'which movie, I only saw coloured pixels changing their intensity very fast'. Now that is not an argument that there is not a physical basis of the movie in the changing pixels. Of courae there is. Without the physical TV-device we would not be able to see the movie. But the movie is not added magic to the TV-pixels: it is seeing the pixels on another level. And except if you are a TV-engineer, it is the only level we are interested in. Same with the brain: of course its all just firing neurons, but in its complexity they are representations. E.g I have a kind of representation of what I am going to cook tonight for me and my family. This representation is somehow implemented in my brain processes. Of course, physically seen, the brain is not an exception to the rest of the physical world. But seen at another level it is consciousness, and it is only by being consciousness that it can work the way it does: that I am able to really make my meal according my ideas. So consciousness is not causally effective while it somehow 'hovers' over the brain, but because consciousness is the functioning brain. But it is impossible that an organism like us can exist without consciousness. It just comes with the complexity brain. My running outside because my sons held a picture in front of my rainbow detector cannot be explained by raindrops and sunlight. My detector reacts at 'looks like a rainbow', not on the physical cause of the rainbow. Therefore it can be tricked, but usually it works well.

Thanks, Strange. Maeder does not give up.... I also saw (negative) comments of John Baez. Now I'll wait till we have found what DM really exists of. WIMPS, brown dwarfs, planets without stars, (primordial) black holes ....

Sorry, but I had to express my disappointment about just a sarcastic reaction from you after, I put some energy in formulating my posting. You don't have to defend everything. For a dialogue between us it is enough to give your well-supported own stance about the points that I brought in. Having not so much time is of course a problem. But you could have just said so. It is a pity, but it is OK. Now that is a too fast conclusion of you (from one post?). I am all in for a friendly argumentative discussion, in the hope of sharping my views (which can imply changing them, of course). In this sense, I hope that you eventually react on my posting above.

I think the faq is a good start.

Does this answer your questions? If not, just ask further.

That is a pretty devastating critique. I looked up Maeder's background before I posted this, he seemed a kind of authority. So I didn't have to wait very long... Thanks for the link.

Yes, funny. And now, iNow? You linked an article, and I assume you brought it in to support your position, or at least that it makes an interesting read. And I read it, and commented on it. And then your only reaction is sarcasm? I am disappointed. I thought you want to be rational. But if you want to discuss rationally, but are not prepared to enter a rational discussion i.e. try to find out what the better arguments are, then better let it be. It seems to me that you are quite content with your gut feeling that we have no free will, and therefore do not want to investigate if you are really correct.