I walked past this 'experiment' every day for a number of years at UQ in Brisbane (on route to my lunchtime nap in the great court). The glass cabinet is fairly

I walked past this 'experiment' every day for a number of years at UQ in Brisbane (on route to my lunchtime nap in the great court). The glass cabinet is fairly inconspicuous, sitting outside a bunch of small rooms, above a minor thoroughfare. I don't remember exactly how long it took me to take notice and stop to read the inscription (2 years+?) but I was impressed when I did. And it's extraordinary the number of times it has come up in conversation since.