Evolution

[vulcanlogician]

That's what losers do time and time again.
Instead of answering the question which of course they are unable to answer   they resort to the usual trick which is to pretend that the question was never asked and at the same time ask a question in return.

Little bit of hypocrisy on your part there, Rik. Jus' sayin'.

Plus your article is hardly conclusive. It says so right in the article itself. You are jumping to conclusions.

For some researchers, evidence of these complex communication systems -- emitting noises via gas when in distress -- signals that plants feel pain. Others argue that there cannot be pain without a brain to register the feeling. Still more scientists surmise that plants can exhibit intelligent behavior without possessing a brain or conscious awareness [source: Pollan].