The progress of technology doesn't always turn out the way we would expect it to. Sometimes it does, like with the development of computers. People said that eventually you would have personal computers the size of your hand, which turned out to be true, considering smartphones today. However, many technologies didn't follow a logical developmental progression - two examples are the radio and the oven.
Radios today have been improved upon not by smaller or more high quality radios (although they do exist), but rather by internet radio services such as Pandora. From the perspective of the early 1900's, it is difficult to predict that the development of the radio would lead to personalized internet music streaming, which isn't really radio at all.
Similarly, the development of the microwave oven is not a logical successor to previous technologies. The microwave, unlike previous cooking devices, doesn't use direct heat, but rather high-powered radio waves.
By confining what we expect tomorrow's technology to be based on today's standards only puts limitations on the future. The biggest inventions and creations won't simply be an improvement on current technology, but rather completely new perspectives on existing problems.
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