My first ever computer program that I wrote in 1982 was autonomous. If I left the computer it would keep printing my name, as if it had a life of its own. As if it was sentient. It never gave up. Thankfully I had a keyboard command to kill it.
This was the whole of it:
10 PRINT "PELLE"
20 GOTO 10
As I know someone will be wondering: it was a Sinclair ZX81 and yes I still have it. 😊