Little Green Men

I am not often in town so find the habit of city folk trusting a little green man to tell me when to cross the road a little odd. However as this image shows city folk seemed pre-occupied with other things when crossing the busy junction across Union Street and Bridge Street in Aberdeen city centre.
Some are on phones, some in prams and one is on a bicycle. Others look as if they are dreaming or even thinking about unworldly things. One even seems to be on drugs.
I find it all very odd but then the only green men I ever see here in rural Aberdeenshire are the ones who fly in at dead of night to abduct my neighbours and steal cows ...