This would be a really good question to ask applicants at a consulting interview
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Sugar seems to have basically followed inflation in dollar terms looking at the sugar #11 futures price and not doing anything but some rule of 70 mental math and averaging. It has been fairly volatile. There is politics involved in sugar and sugar producers are subsidized through trade measures and very powerful in US state politics. As such the price is probably inflated somewhat by this. Going forward the demand for sugar is also hard to project. World population will probably grow faster than sugar production capacity. Sugar demand is declining in developed nations due to health efforts but seems like it might become more of a part of the developing economies that prosper and that are being invaded by Coca Cola.
All that is before trying to make any future projection about the price of bitcoin (much less the state of network communications) in 2045