I answered above. I should also add that what Scotty means is when you make everything complicated it becomes easier to stop the system.
Much like the dystopian future in Brazil -
Brazil (1985 film) - Wikipedia .
If you are not careful with this when the system breaks down there is no substitute in place. Much how we are today, but at least there are alternatives like other currencies, gold, etc. If you become entirely reliant on a system which can fail (or make errors), break the system and everything creaks to a halt.
Think about what we have now. Remove money and people starve. The odd thing about that is that money is not an essential part of producing food. It is just a means to exchange labour. The problem is that our systems become reliant on money and removing the money then stops the activity.