"If it ain't broke don't fix it."
The money system is not broken, it's working perfectly as designed, to Syphon wealth and hard assets from the bottom to the top.
So to "fix the money" points more towards fixing the supply to the 21m hardcap.
"Fix the world" is the downstream effect of a "fixed" money supply.
"Fix the money, fix the world"
@Neal talks about this in his book Modern Chains!