“Food is available, but it cannot be shipped into an area, so the people in that area suffer the consequences.”
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Disease and ill health are caused largely by damage at the molecular and cellular level, yet today's surgical tools are too large to deal with that kind of problem.
If you look at the various strategies available for dealing with a new technology, sticking your head in the sand is not the most plausible strategy.
If we attempt to block the development of new technology, we effectively have ensured that the most responsible parties will not develop them.
Lighter computers and lighter sensors would let you have more function in a given weight, which is very important if you are launching things into space, and you have to pay by the pound to put things there.