The snake that eats itself – the ourabus – is an ancient symbol, found in mythology across the world. 
I simply needed a dream symbol for the computer to get stuck on, that it would struggle trying to ‘solve’. 
But I had no idea at the time of first writing this – that the ourabus is THE sign of the Singularity (nor did I know anything of the concept of the Singularity, which is a moment of infinity, and now also used to describe the moment when tech growth has accelerated so fast as for change to become instant). 
The symbol literally ‘came out of the blue’ to me, which might be ‘happy-stance’, or it might be the magical power of intuition? I like to think it’s the latter, and it still gives me goose-bumps.