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It all began with analogue computation back in the last century, with circuits featuring anode-cathode valves. Before that, there was the German Z-1 computer that used relays. Speaking of valves, I used to love peering at the back of our old Colorado brand black-and-white TV, which my grandfather bought to watch the FIFA World Cup in 1978, unfortunately won by the Argentineans. Colorado TVs were very common in Brazil during the 1970s. Then came the digital revolution – everything became digital, cars lost their rounded curves and became straight and dull. And then came cloud computing, supercomputers, and artificial intelligence. Now, with the latest technology, companies like IBM and Mythic are delving deep into this analogue technology to apply it to AI. This reminds me of a technical school teacher, Jair Cursiol, who always used to say, "The world is analogue".