[thelist] Question about Page Requests

[Damien COLA]

It can be search engines bots or other bots hitting or trying to hit
such a file as "robots.txt" while not spidering any page just now.

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I thought I also understood the issue of browser caching and how that
affects statistics. But I'm stumped! What I don't understand is this:
for August 5th, her output report says the number of requests is 7, yet
the number of page requests is 0. Can anyone give me an example/scenario
of how this would happen? Am I right in thinking that in order for the
total requests to be greater than 0, the page requests would have to at
least be 1?