kind of interesting. but i don't think the main point that people think in one of two different ways, is correct. one reason is it's very hard to find a person who thinks well in most areas. partial mappers are much more common than consistent mappers.
It's probably more useful to think of mapping/packing as skills rather than types of people. But then you can't claim that all those evil packers are oppressing you.
This reminds me of The Programmer's Stone: http://www.reciprocality.org/Reciprocality/r0/ which talks about "mapping" and "packing" as two different ways people learn. The authors found it easy to teach programming to those that tended toward mapping--building a mental map of a subject rather than accumulating facts about it.