Purple dosn't beleve in relativity

I have only just discovered this site so i hope that I am not repeating what has been said before.
If any experiment designed to observe the effects of relative velocity on matter systems, eg clocks for their simplicity of observation,shows that one clock of two identical clocks does not keep identical time with the other over a period of time, (the start and end readings to be made at the same point in the IRF of the observer so as to remove observation effects )then the STR is invalid.For one clock must be fast with respect to the other and the STR cannot predict 'time contraction'.
Several experiments show this time difference.
If it is considered that any experiment of this type is invalid due to one or both clocks not residing in an IRF throughout the experiment, then any velocity effect prediction made by the STR of an observation made fom Earth must also be invalid as the Earth does not inhabit an IRF. Consequently a velocity effects theory which will allow predictions from Earth is still required.
My tip for other posters to this site is that they should distinguish between observations which include observational effects ie arising from the circumstance of the observer,and real effects that do not.