Comment by Shrezzing

The hyperinflation example is quite interesting because:

1) If it happens, it happens rapidly, and you don't want to implement this in a hurry

2) If it happens, the global economy could well be melting down, and your financial institution will have other priorities to attend to

3) Retaining existing staff, and hiring new engineers, will be challenging at best

You really don't want to be implementing this change in those circumstances.