The authorship debate has continued in the 21st century. Wolff calls it a pseudo-problem. Williams suggested that the piece may have been created by another composer who must have been born in the beginning of the 18th century, since details of style (such as triadic harmony, spread chords, and the use of solo pedal) may indicate post–1730, or even post–1750 idioms. Statistical analysis conducted by Peter van Kranenburg, in the second half of the first decade of the 21st century, confirmed the Fugue was atypical for Bach, but failed to find a composer more likely to have composed it than Bach. David Schulenberg feels that the attribution of BWV 565 to Bach is doubtful. Richard Douglas Jones takes no position with regard to the composition's authenticity. In 2009, Reinmar Emans wrote that Claus and Wolff had diametrically opposed views on the reliability of Ringk as a copyist, inspired by their respective positions in the authenticity debate, and thinks that sort of speculation unhelpful.