Again, it is a common mistake by economists to use currency as an absolute measure of value. But I understand that it is extremely difficult for them to understand that currency's value fluctuates all the time, since they have been using currency to measure value since they barely can do 1+1. If they start from an international point of view by looking at FOREX market, then they will understand that currency's stable value is just an illusion. Get rid of that illusion, then people will not look at the numbers in their account to decide if they are profitable or not, they will look at what they really gain from a certain economy activity
I have just one question. What are you as a producer going to do with negative profit, i.e. a loss that you may incur as a result of decreasing prices? Remember that you have to pay wages from your income, and your employees don't care about your ideas (absolute measure of value and all that) but love cash.
Indeed, if you use cash as unit of value, you will have this problem. And Keynes said that people prefer a rising cash income and rising price over a dropping cash income and dropping price. It is this basic instinct make inflative monetary policy seems reasonable