" There is a small ncRNA called BC1 which is expressed in specific neurons in mice. When researchers at the University of Munster in Germany deleted this ncRNA, the mice seemed fine. But then the scientists moved the mutant animals from the very controlled laboratory setting into a more natural environment. Under these conditions, it became clear that the mutants were not the same as normal mice. They were reluctant to explore their surroundings and were anxious37. If they had simply been left in their cages, we would never have appreciated that loss of the BC1 ncRNA actually had a quite pronounced effect on behaviour. A clear case of what we see being dependent on how we look. "

― Nessa Carey , The Epigenetics Revolution