Any question answered...

Pedagogy has been described as the holistic science of education, learning and skill development,3 and as such is open to influence from all angles, whether that be advances in psychology and neurology; or a change in funding from local or general government. This .......... means that the spaces designed around education must be able to aptly and quickly evolve to fit the current methodology of teaching.

I need to replace the dots with a suitable word. Like fragility, but not.
Basically, is there a word for 'necessity to be changeable'?