Changes

===Meaning===

'''Fermions''' are a group of [[Subatomic Particle|subatomic particles]] which are not able to exist in the same place at the same time as one another.

''NB: This definition is loose and inaccurate, but sufficient at this stage. It is more accurate to state that they are 'half-integer spin' and unable to have the same 'quantum state' as one another.''