text: For his part, Baars writes (along with two colleagues) that there is no hard problem of explaining qualia 
  over and above the problem of explaining causal functions, because qualia are entailed by neural activity 
  and themselves causal.[21] Dehaene, in his 2014 book*Consciousness and the Brain*, rejected the concept 
  of qualia and argued that Chalmers' "easy problems" of consciousness are actually the hard problems.[20] 
  He further stated that the "hard problem" is based only upon ill-defined intuitions that are continually 
  shifting as understanding evolves:[20] 