In the foundations of physics we haven't seen progress for the past four decades
Just a thought: The fact that there is physics beyond current knowledge doesn't necessarily mean that it's achievable to find out about it.<p>Think about it: Finding confirmation for the Higgs Boson required building a particle accelerator of 27 kilometers. For the larger part of humanities existence it was probably unthinkable to design such an experiment.<p>What if the next level of yet unknown physics requires building a machine that's as large as the equator? Or larger than anything that can be built on earth?