What are the most ahead of their time technology?

This machine has the oldest known complex gear mechanism and is sometimes called the first known analog computer,[13][14][15][16][17][18][19][20] although the quality of its manufacture suggests that it may have had undiscovered predecessors[21] during the Hellenistic Period. It appears to be constructed upon theories of astronomy and mathematics developed by Greek astronomers and is estimated to have been made around 100 BC.