What good is a newborn baby?

It is said that Benjamin Franklin, when asked if his research on electricity was what's the use?, replied, "What use is a newborn baby?"

However, this is of unknown source. https://machida77.hatenadiary.jp/entry/20111205/p1

For example, it's funny as nothing, so let's use it without saying Benjamin Franklin said it.

#Parable

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