[tifareth]

Shocking, isn't it? But he goes on to describe GTD concepts that would make TODOs meaningful as if he is the original source of said ideas.

[dhimes]

Most of the ideas are quite old- possibly enough to be considered 'public domain.' From Daytimers systems to 'getting organized' self-help books, these things have been around since at least the 1970s.

[officemonkey]

This article says some of this stuff is as old as Benjamin Franklin. http://www.inc.com/ss/brief-history-time-management#0