Mid-nineteenth century — in a project to connect Great Britain and the US with a submarine telegraph cable — investors lost mountains of money because they trusted a person having no understanding of the science needed. When investors learned to trust scientists and engineers understanding the science, then the project succeeded.
The cable changed the world. The lesson that engineering based on trustworthy science was needed also changed the world.
Part of the story of the transatlantic telegraph cable [video link]
Transatlantic telephone also changed the world [video link]
Computers also changed our world [video link]
Some jobs were gone [video link]
Some new opportunities were created [video link]