You may want to source numbers for your claim. I looked at unemployment rates for the U.S., the UK, and Germany in the lead up to WWI and none of them had unemployment rates near 25% or any higher than usual. The Unemployment rates prior to WWII were much higher, but as a result of the Great Depression as opposed to any kind of mass unemployment resulting from advances in technology.
As another poster already pointed out, no one can perfectly foresee the future of the economy. If they could, communism would actually have worked as the central planners could predict where the economy will move. It doesn't matter that no one individual can predict this every time. All that's required is for someone to have an idea and a need for human labor and it will create jobs that previously never existed.