text: **Hard problem**
  
  The hard problem, in contrast, is the problem of*why*and*how*those processes are accompanied by 
  experience.[1] It may further include the question of why these processes are accompanied by this or that 
  particular experience, rather than some other kind of experience. In other words, the hard problem is the 
  problem of explaining why certain mechanisms are accompanied by conscious experience.[27] For 
  example, why should neural processing in the brain lead to the felt sensations of, say, feelings of hunger? 
  And why should those neural firings lead to feelings of hunger rather than some other feeling (such as, 
  for example, feelings of thirst)? 
  
  Chalmers argues that it is conceivable that the relevant behaviours associated with hunger, or any other 
  feeling, could occur even in the absence of that feeling. This suggests that experience is irreducible to 
  physical systems such as the brain. This is the topic of the next section. 