My philosophical prejudices lead me to believe that the necessity of dark matter/energy implies a shortcoming in our understanding of gravity. Clearly, there are shortcomings at the quantum scale, but this is another matter entirely. I ran across an article on physicsweb where a scientist proposes a test for a MOND theory. http://physicsweb.org/articles/news/11/3/12/1 Point of the thread: 1) Does anyone share this philosophical prejudice? 2) What are your educated opinions on MOND theories?