How much of me is the original me?
How much of the baby that you were born as is still part of you now? Plus we ask - can you brew beer in space?.....
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I am 57 years old. Do I have any original parts? In other words, how much of the baby that was born in 1954 is still part of me? Also, how much of the 18-year-old teenager that I once was is still with me? Do my soft tissues cycle out over time? What about bones, nerves and brain...