Human languages tend to be much more ambiguous than computer languages because humans are much smarter about interpreting the context.
Laziness is a programmers main virtue.
Let's say the docs present a simplified view of reality.
Although the Perl Slogan is There's More Than One Way to Do It, I hesitate to make 10 ways to do something.
It's there as a sop to former Ada programmers.
It's easier to make up sayings people like to hear than sayings they like to heed.