[wamatt]

There is likely an element of truth to OP's general point.

For example, journalist and author, Joshua Foer[1], talks about the astonishing feats of memory by average people. It becomes more persuasive, when it turns personal. While he starts out by writing a story on memory championships, he decides to take it further and delves deep into learning the techniques himself. Some time later, he ends up becoming the USA Champion!

"In 2006, Foer won the U.S.A. Memory Championship, and set a new USA record in the "speed cards" event by memorizing a deck of 52 cards in 1 minute and 40 seconds"[1]

The Ted Talk provides more detail [2].

[1] http://en.wikipedia.org/wiki/Joshua_Foer

[2] http://www.ted.com/talks/joshua_foer_feats_of_memory_anyone_...