That is only true if you are not simultaneously creating new money to replace the money that has been effectively been withdrawn from the system - which is precisely what the fed, the Bank of England, etc., do when they churn out new currency.

If there were a constant and fixed supply of money, what you say would be true - but there is not, and therefore what you say is false.

Cars in driveways will not explode, crops will not catch on fire, but the incremental benefit from increased efficiency will never be realised in any tangible fashion.

Also, nice stoop to the ad-hominem - I'm no communist. Are you a primitive randroid?