"Roland Perry" wrote in message
...
In message , at 14:10:10 on Fri, 30 Sep 2016,
tim... remarked:
If someone has been around the world (not literally) to hundreds of
airports and is used to the system whereby fast racks lanes are
available to people who hold some upper class of travel ticket, it is
perfectly reasonable to expect that is the system with all fast track
lanes and not look for alternative methods of entry. Why would you
not?

By observing the fact that at some airports (even if not yet at the one
you are boarding from) there are places to buy fast-track tickets.

Like this (hardly invisible):

http://l7.alamy.com/zooms/7830b8caaa...22d3/a-ticket-
machine-in-an-airport-sells-fast-track-tickets-for-access-c1pcyj.jpg

and where is that?

Newcastle International Airport, Newcastle, England, United Kingdom
Date taken 29th December 2010

Never been there.

(I must have bashed the metro line at one point, but doubt I went into the
airport when I did)

I may never had walked past it (or one of its brothers)

Several airports have them,

so

and knowing that is a mixture of general knowledge

One doesn't just acquire "general" knowledge, someone has to teach it to
you. One person's generality is another person's specialism

Have you not seen the most basic questions about travel tickets asked here?

and observation.

can't observe something you have never been near

tim