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Just here to post my 2 cents. Man isn't perfect by a long shot and even good meaning individuals and groups commit errors on a daily basis. The scale of the error matters not. What matters is thinking that mankind is so perfect and kind that any creation of sentience, if it really is, is going to be worse than we are and have capabilities greater than ours. It's like dogs giving birth to a gator and then the gator turns and eats them all.
Plus, AI hasn't been able to show true sentience. Having to continually tweek software and hardware is very indicative of that. The problem with technology is that man loves to compare themselves to it and even think it's the same thing, metaphorically speaking. It's not and never will be. Life came to be mysteriously and a machine will never have life mysteriously, because it's a clever invention, nothing more and nothing less.
The ultimate goal of AI is to trick the less perceptive population (the grand majority) into accepting and (key word here) believing that it works and it's better than man. As a consequence, they will be abused, like a person possessed, to control the population. It's wrong and quite frankly, it will never have true sentience.