For all my artist friends – Did you ever find it cool that of all the most ancient works of man, the earliest and best preserved are the cave paintings?
The burly hunter would stroll in with his fresh kill, all proud and haughty, look at the artist and say -” No one cares about your stupid drawings! Why should I give you some meat for those, what about the exposure you get by having your work on my cave wall?”
Michael Bradley - Time Traveler 
Walls are still a great place for artwork and social commentary nowadays, be it brick or digital. 10’000 years on and we’re still painting caves!
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