How easy it is to miss a chance to get a job

People’s short-sightedness amazes me. Many of the girls who asked me about a job, when I told them

“The vacancy is closed for now, we’ve taken a girl on for a trial period, but do send us your résumé anyway, just in case. The vacancy might open up again…”

said (and still say) to me: “No, I need a job now, not in two weeks.”

I can’t under­stand why people would deprive them­selves of extra chances. Who knows, maybe she’ll go on going to inter­views for another two weeks, or take a job with worse con­di­tions… Or is it optimism?