The correctness of Einstein's 1905 derivation of was criticized by Max Planck in 1907, who argued that it is only valid to first approximation. Another criticism was formulated by Herbert Ives in 1952 and Max Jammer in 1961, asserting that Einstein's derivation is based on begging the question. Other scholars, such as John Stachel and Roberto Torretti, have argued that Ives' criticism was wrong, and that Einstein's derivation was correct. Hans Ohanian, in 2008, agreed with Stachel/Torretti's criticism of Ives, though he argued that Einstein's derivation was wrong for other reasons.