13. The Relationships Between Spiritual Science and Individual Academic Subjects III

All of this – you will gather this from the way I say it – is not based on phantasms; it is carried out as precisely as is possible in science. But we must work with concepts that can be flexibly applied to the various areas of reality. Our concepts must not be developed one-sidedly in certain specialized fields and then remain what is legitimately presented in the individual specialized fields; our concepts must become flexible so that we can immerse ourselves in the entire wide range of reality. Otherwise, we acquire such concepts with which we believe, in a strange way, to embrace the factual fields, but with which we in reality only remain distant from the factual fields. We have a remarkable example of this in our own time. Those who are familiar with such things will know how many theories about the ether there have been in the course of modern times; they know how attempts have been repeatedly made to characterize the ether as being sometimes rigid and sometimes fluid, depending on the phenomena that were thought to as arising from the interaction of ponderable matter with the ether, characterized the ether as sometimes rigid, sometimes fluid, until finally experiments in modern times are said to have shown that one cannot get ahead with all these old ether theories. The simple experiment that was conducted regarding certain conditions in the propagation of light – or, as it was said, in the transmission of light – this experiment is said to have shown that a special correction, a radical correction of the concept of ether, is needed. The experiment is as follows: If a light is made to flicker at a point A and this light is followed from point A to point B, then, if point B is in motion, that is, moving on, the light should arrive later than it would arrive at B according to the speed of light in physics if this point B were stationary. But what is calculated in theory does not arise in practice. And - I omit all transition links - that is where, with some intermediate links, the theory of relativity has found its roots, this theory of relativity, which now has as a result that the ether is completely abolished. But then one calculates with strange things, for example, that bodies can simply shorten themselves through the movement itself and the like. Now, you only need to study the relevant literature to see how certain concepts have become so rigid and fixed that they are then applied to reality in such a way that one believes one has grasped reality, but in fact remains extremely distant from it.