I did read that, I think all writers can 'design" to get the outcome they'd like to present...
Couple things, 1. No interest on cash held waiting for dip? 2. Can't sell any stock once in. 3. Market Indexes are rigged (ie: they constantly chuck out the poor performers and throw in the biggest movers, biased to upside)
and on top it that, they quoted Peter Lynch...who beat the index by double during his tenure at Fidelity. I imagine that would be rather hard with DCA.
(20min delay)