Japan’s Pioneering Detector Set To Join Hunt for Gravitational Waves

This article leaves me with more questions than answers :-)<p>I seem to recall that LIGO budget was in the billions, this on the order of 150M. Where does this huge difference in costs come from? Is it related to LIGO being the first, and now some previous unknowns are now known? Or something else entirely? Digging those tunnels can&#x27;t have been cheap...<p>What&#x27;s the expected sensitivity, compared to LIGO and Virgo?

Crossing my fingers for verification. It seems like the Nobel committee should have waited for multiple third-party verifications of LIGO&#x27;s results.<p>It would be pretty terrible if we found out the detections were mistaken or even fraudulent.<p>From what I can understand, LIGO&#x27;s results seem very open to interpretation. It seems like they could be mistaking noise for signal. And it even seems possible that some unscrupulous person(s) could have created fake signals, using something like the &quot;blind injection&quot; mechanism.<p>Extraordinary claims require extraordinary evidence. It doesn&#x27;t seem like the evidence is strong enough yet to say definitively that GW even exist.