Very true, the less user input you have the safer your code will be.

I sometimes like to make simple, big, one-pot meals that just rely on increments of tablespoons for spices and cups for lentils/rice/etc.

Yeah that one!

The original calculation (adding up all the ages in the genealogies in the Bible) was done a few hundred years ago, but all the young earth creationists I saw put the start at 4000 A.D., so 6000 years ago.