Changes

Curiosity as plesure<ref>[Karlsson, Niklas, George Loewenstein, and Jane McCafferty. "The economics of meaning." Nordic Journal of Political Economy 30.1 (2004): 61-75.]‏</ref><ref>[http://arxiv.org/ftp/arxiv/papers/1010/1010.3009.pdf Perlovsky, Leonid I., M-C. Bonniot-Cabanac, and Michel Cabanac. "Curiosity and pleasure." Neural Networks (IJCNN), The 2010 International Joint Conference on. IEEE, 2010.‏]</ref>