Hospital trip and a Random Thought

This weekend I am partaking in a trip up the coast with a medical society known as TROPHIQ. Essentially they are pro-rural medicine. If you'd like to know more about them just go to trophiq.org . Anyway, we will be heading up to Bundaberg where we will tour a couple of hospitals at which we get extra skills training in areas such as: cannulation, airway management, suturing, scrubbing in/out of the OR etc. Neat stuff :) Also we get a tour of the Royal Flying Doctor's air hanger and medical chopper. I've signed up for a turtle hatchery tour where you go to the ocean at night and hopefully watch the emergence of newborn baby sea turtles...of course, if it's anything like Planet Earth and they are being snatched up by birds, i may have to go and bust some gulls (get it...sounds like skulls...but gulls are sea birds).
To the RANDOM THOUGHT
This one arose while I was sitting on a public toilet to be quite honest.
It has come to my attention, that the art of expressing one's thoughts on the stall wall of a public toilet, is an international phenomenon. Now, I can't comment on the ladies toilets, but i assume it may be similar. What merits this as a "random thought" worthy discovery, is that not only does it seem to be engrained in our human nature to write what we think while defecating, but that many times there are those trying to express a profound philosophy in this venue. And I wonder....why do people feel that the wall of a toilet is the best place to express their thoughts on religion, society or even just the human predicament in general? Just today there was a scripture on the mathematical derivation that God = Evil based on the principle of time = money. An interesting argument...but an even more interesting place to argue it...also...how long was this guy taking a crap for?  Now, aside from the fact that people write their thoughts on the bathroom wall, is the fact that they will actually carry out complete debates and/or conversations over time. And this is shown by the matching of handwriting. Sometimes you will see multiple entries from the same hand and wonder if this person could sleep the night before, or if they were too busy researching for their rebuttal to the defecation debate?
Lastly I wonder......if we were to take all of the bathroom stall walls in the world and bring them together...how many questions would we have answers for ????

cheers,
     Harrison