The 4th Concept is welcomed and encouraged. In the end, it's my hope and belief that the best ideas are what will be used in these detectors.
The waves are subtle, altering spacetime and the distance between objects as far apart as the Earth and the Moon by much less than the width of an atom. As such, gravitational radiation has not been directly detected yet. We hope to change that soon.
I have somewhat ambivalent feelings about the recognition of individuals when so much of this was a team effort.
When the signal reached LIGO from a collision of two stellar black holes that occurred 1.3 billion years ago, the 1,000-scientist-strong LIGO Scientific Collaboration was able to both identify the candidate event within minutes and perform the detailed analysis that convincingly demonstrated that gravitational waves exist.
A lot of missions for NASA or experiments on accelerators happen through a whole process of scientific retreats, long-range planning, forming collaborations to do studies - all this kind of stuff. It's very democratic.
Scientists, especially physicists, we're presumptuous and think we can do everything better than everybody else. And one thing that I realized early is, I had some talent managing and organizing things - you know, some people are better organizers than others - but why should I reinvent the wheel?
