I would say,"HOW is the needle affected so that it moves this way?" Then to answer the question I would formulate a hypothesis and theory to explain the motion of the needle.StevenO wrote:So, what would you say about the movement of a compass needle...altonhare wrote:Define "material"?
I do start with observation. I have never seen 'anything' without shape. There are no presuppositions here. If I happen to observe 'something' without shape one day, I will immediately alter my conclusion.webolife wrote: You say you start with observations, but I will never bend on this point: Your presuppositions determine your conclusions; where observations fail, this is all you have.
Where is this vector 'thing' that you measure? Here on earth we can only measure objects, what planet are you from?webolife wrote: Vectors are conceivable, and measurable [both in direction and magnitude]. Both are invisible, so we must depend on our premises, plus logic, to make a sensible conclusion.
This equivocation is made over and over and over and over. Shape has nothing to do with whether one can SEE it. An object exists independently of your (or anyone's) personal ability to see it. The word shape has nothing to do with visible/invisible. All shape means is shape, i.e. a boundary.StevenO wrote: Or an even simpler example: the wind blowing in your face. Since you can't see it's shape it does not exist? What about heat or cold, smell or sound?
When I feel the air on my face, I ask,"HOW is my face/body affected so that I feel this way?" Then I formulate a hypothesis and theory to explain what I experience. Same with heat, cold, smell, and sound.
The hypothesis consists of imagining an object/entity/shape while the theory illustrates how the postulated object behaves to produce an effect such as the movement of a needle.