The most watched experimental efforts pertinent to modern physics are heinously expensive. State of the art particle accellerator project like the LHC cost hundreds of millions of dollars to build. http://www.physics.fsu.edu/PhysicsNewsletter/Spring97/The_Large_Hadron_Collider.htm Gravity Probe B is a $700 million experiment. http://wired-vig.wired.com/news/space/0,2697,64505,00.html Is there really no room to do useful experiments to gather information that would be useful to theoretists in string theory, LQG, brane theory and other branches of modern physics that cost say, under $10 million? Or, has brute force simply shoved cleverness out of the way? For example, some of these theories are suggesting that we should see Quantum Gravity effects at distances as large as 1 mm. Is it really that expensive to do experiments to explore what is going on in the 1mm to 1 micrometer scale gravitationally and hence further constrain theory? Similarly, the Casmir effect has excited a lot of interest relevant to dark energy. Couldn't someone do some really significant research in this area for say $8 million? Are there really no ways to infer the existence of undetected particles experimentally short of Tetra-electron volt class conditions?