Winners and Losers
I own some Coach stock (symbol COH). It's done very well these last few years. (I am not bragging, I've lost more than I've made with my stock market investing.)
Two weeks ago I was checking out how Coach's price per share was doing when I saw an article by Motley Fool. There was nothing of interest to me in that article about Coach. But that article also discussed Franklin Covey. Their assessment was that FC just did not adapt quickly enough to the onslaught of the PDAs.
If the PDA is the cause of FC's downfall it could be the cause of DA's ascendancy. I started GTD without a PDA. But it was awkward and cumbersome. It can be done and, it seems, it was done by DA pre-PDA. But I cannot imagine GTD gaining any kind of widespread popularity without PDAs being in existence.
GTD works a lot better with a PDA than without. And PDAs work a lot better with GTD than without.