Isn't the "tipping point" in the law of diffusion of innovation (http://en.wikipedia.org/wiki/Diffusion_of_innovations http://en.wikipedia.org/wiki/Diffusion_of

Isn't the "tipping point" in the law of diffusion of innovation (http://en.wikipedia.org/wiki/Diffusion_of_innovations http://en.wikipedia.org/wiki/Diffusion_of_innovations) somewhere between 15-18% market penetration?