Columnar Organization?

On page 32 the first paragraph says:

"Those attributes that are made explicit -- that is, for which there exists a columnar organization -- are the ones that are sufficient, under the right circumstances, for conscoius perception."

Is he claiming that columnarly organized representations are the only ones that are sufficient for conscious perception? Does he think that the Bill Clinton cell is in a Bill Clinton column?

He had claimed that columns were important before, but I thought that he would eventually explain why he is giving so much importance to it (maybe he will later). But at the moment, there is no reason to believe that columnar organization has any relationship to conscious perception, or that explicitness is correlated to columnar-ness (nice word ah?).