[xiler]

In particular see the "Mary the super-scientist" thought experiment for a nice explanation of the difference between the two.

https://en.wikipedia.org/wiki/Knowledge_argument

http://philosophyfaculty.ucsd.edu/faculty/rarneson/Courses/F...

[omginternets]

I would also read Daniel Dennett's Consciousness Explained for a counter-point about why "Mary the super-scientist" is based on a faulty premise, and why the Hard/Easy distinction is fallacious.

https://en.wikipedia.org/wiki/Consciousness_Explained