paragraph inconsistency

[Koen H]

I was looking at the PHP Markdown tests and noticed that

    paragraph
    >some quote

was rendered as a paragraph with a blockquote following it. And

    paragraph
    #header

should be rendered as a paragraph with a header following it. But then

    paragraph
    * ciao

should be rendered as one paragraph? From the first two I would expect
it to be a paragraph and a list.

Is there a rule or some reasoning behind this?