Old, and false if you are to remain scientific.
Most scientific theories read something like- If X is true, we should expect to see Y and Z. If Y and Z can not be found, X is most likely not true.
I do medical research. In the medical world, saying there is no scientific evidence for a treatment's effectiveness is not the same thing as producing a study that shows that there is evidence that a treatment is ineffective. So, it is indeed very true that ........"absence of evidence is not evidence of absence."