There are other ‘technological civilizations’ (in the sense of intelligent living things that have learned to manipulate matter in a complicated way) in the observable universe: 99%
What do you mean by “complicated”? Were humans a technological civilization in 1900? In 1700? In 10,000 BC? In 50,000 BC?
What do you mean by “complicated”? Were humans a technological civilization in 1900? In 1700? In 10,000 BC? In 50,000 BC?