The content of this site are my own personal opinions and do not represent my employer's view in anyway. In addition, my thoughts and opinions often change, and as a weblog is intended to provide a semi-permanent point in time snapshot you should not consider out of date posts to reflect my current thoughts and opinions.
The original blog post from which I took the above chart is from here. It talks about how any one at any age with learning and practice can become an Expert. A nice piece to read and think about.