Whitehead and Richerson, The evolution of conformist social learning can cause population collapse in realistically variable environments, Evolution and Human Behavior 30 (2009) 261-273. <a href="http://www.des.ucdavis.edu/faculty/Richerson/RedNoise.pdf" rel="nofollow">http://www.des.ucdavis.edu/faculty/Richerson/RedNoise.pdf</a><p>A lack of independent decision making seems to put the society at risk. The Recommendation Age (crowd sourcing opinions and decisions) may not be a good choice for long term survival.