Consider this analogy: Would it be possible to build a plane that could fly years longer than current models without its performance suffering? The answer is yes. There are at least two ways to accomplish this: The longer-lived plane would need more fuel and more maintenance for each mile it flies to prevent damage. The longer-lived plane would require superior technology to reduce damage while using the same amount of fuel and maintenance as current models. Now let’s apply this to humans: People who live longer would need more energy to perform more maintenance (DNA repair, cellular
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