I don't know how clear was my initial post for who read that I have wrote. For me can mean something and for other person can mean something very different. Now I will try to improve the expression.
I have reasons, physical and mathematical, to reject the idea of ether. Mathematical reasons are exposed in this thread.
I have reasons but, anyway, I am interested in all kinds of arguments. Why? Because I am a teacher. There are a little number of boys and girls really interested in this issue, and they are very intelligent, and they present many valuable arguments. I am trying to collect in the forum powerful arguments of all kinds, that can prepare me to manage better classroom arguments.
When I started the thread, I ignore that it can generate passioned discussion and fighting. And I ignore that I will need to fight too for achieve that people read my posts with a bit of attention, in a way that avoid missunderstanding. I don't wrote, in no paragraph, that I am in favor of the ether hypotheses. But some persons have believed the inverse idea.
Anyway, here was generated a very interesting development of the main issue. And I am greatful for this.