With the assumption of UNDETECTABLE things in a theory any theory could be developed since it could never be proven wrong! This way anyone can invent any theory! To sustain Relativity Theory the concept of UNDETECTABLE "dark matter" was developed but about hundred years have passed without experimental confirmation... To sustain Quantum Physics the concept of UNDETECTABLE "virtual particles" was developed but there's no experimental confirmation on them... Don't you think is time for a totally new theory in Physics? I have a very good start-point for one without any undetectable thing. For those that could be interested I cannot post the link here but it can be found in my profile ("A New Light In Physics").