This question of 80 year time spans is kind of silly. Take an example of agriculture, fundamental to human civilization. 200 years ago, the tools used by a farmer to harvest their crops were essentially identical to those used to harvest crops 3000 years ago. Simple, hand-made devices of wood and metal. In the past 200 years, the scythe has been replaced by the combine harvester. If that represents a slowing-down of technological progress, I'll eat my hat. Griping that not enough cool things have been invented in your lifetime is not unlike griping that not enough cool things have been invented in the past week. A longer view is more appropriate.
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This question of 80 year time spans is kind of silly. Take an example of agriculture, fundamental to human civilization. 200 years ago, the tools used by a farmer to harvest their crops were essentially identical to those used to harvest crops 3000 years ago. Simple, hand-made devices of wood and metal. In the past 200 years, the scythe has been replaced by the combine harvester. If that represents a slowing-down of technological progress, I'll eat my hat. Griping that not enough cool things have been invented in your lifetime is not unlike griping that not enough cool things have been invented in the past week. A longer view is more appropriate.