There are basically two types of people. People who accomplish things, and people who claim to have accomplished things. The first group is less crowded.
Very few species have survived unchanged. There's one called lingula, which is a little shellfish, a little brachiopod about the size of my fingernail, that has survived for 500 million years, but it's survived by being unobtrusive and doing nothing, and you can't accuse human beings of that.
Usually when you have a sequel, the character always stays the same and that's true basically of 'Rocky III,' 'IV' and 'V.' He didn't really change.
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