Okay, some of these Questions are not asked all that frequently - but - perhaps they should be... to ask a new question ›contact me
Well, I have my own definition, accordingly to which creativity is not rare, I do not even think it is limited to humans.
Most importantly - and please try to remember this - there are 2 main types of creativity: Cumulative and Repetitive. This broadly relates to the right brain / left brain activity.
If you want me to explain more it would take some time and I charge $$$ for this.
When I did it at the Anglia Ruskin University, students found it rather useful, judging by their written response ;-)