Very interesting.
I believe that every professional should know milestones done before in the area. Like I studied history of computer science, for example
![Grin ;D](http://forum.dolgachov.com/Smileys/default/grin.gif)
In the same way, photographers should be consious about the fact that digital SRLs went out of camera oscura
![Evil >:D](http://forum.dolgachov.com/Smileys/default/evil.gif)