Originally Posted by zauhar
YES, It takes only a moment of inattention - for any of us - and tragedy can ensue. That's why it's called an accident.
Exactly. I remember a few years back I was at my grand mother's birthday party on the rooftop of the building she was living in. The sitting area had a ledge but the roof went on another 5-7 metres beyond that. I climbed over the ledge to get a little distance in order to get a better picture of the people sitting (none of them were looking in my direction. I had a small P&S in my hand that wasn't mine and it didn't have a very wide angle so I took a few steps back while looking at the screen. I was very concentrated on the screen but suddenly the thought popped into my mind that it might be a good idea to stop and take a look behind me. I was still about 2 metres away from the edge and in no real danger but it dawned on me that if I hadn't had this thought right at this moment I would've probably dropped to my death.
I've had my fair share of accidents including getting hit by a streetcar when I was a kid which put me in the hospital for a month and in a wheelchair for another month but this one harmless incident on the rooftop a few years back still sends chills down my spine every time I think about it.