in reply to Re^4: ' or no?
in thread ' or no?

You are evidently misunderstanding the explanations being provided. Perhaps the language is a barrier.

Take a look here, the diagrams + explanation may clarify things for you.

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
"Too many [] have been sedated by an oppressive environment of political correctness and risk aversion."

In Section Seekers of Perl Wisdom