At times an article raises controversies, being praised by one reviewer and strongly opposed by another. This was the case with the two articles submitted by the Sleep Research Laboratory of the University of Chicago. Several experts in the field disagreed about the methodology: could the technique used properly detect and quantify fast EEG waves such as spindles coincident with, and riding on the top of, delta? Should other manipulations have been done before performing period-amplitude analysis? Several revisions later, due to controversies still present, the editorial decision was made to publish the two articles and let the readership judge for itself. We also asked Dr. Ktonas, who had not been involved in the controversy, to review the different opinions expressed and to write an editorial outlining the points raised by the reviewers.