Yes, up to now there's nothing directly detected, but we should also not forget that just two years ago a pessimistic article could have been written about the

Yes, up to now there's nothing directly detected, but we should also not forget that just two years ago a pessimistic article could have been written about the detection of the gravitational waves, this is how it could have looked like: "predicted 100 years ago, never detected, even if there was some investment in the detectors and specific scientific work for 40 years, and in spite of some indirect evidence." It is also easy imaginable somebody claiming that LIGO shouldn't be funded only to "measure the change of a 4 km length in a tiny fraction of the size of a single proton." But then... hundred years after the prediction, the magnificent thing did happen: https://en.wikipedia.org/wiki/First_observation_of_gravitational_waves https://en.wikipedia.org/wiki/First_observation_of_gravitati... And then another one: https://en.wikipedia.org/wiki/GW151226 https://en.wikipedia.org/wiki/GW151226