“Rotating memories and other electromechanical computing devices have been fully replaced with electronic devices. [By 2019.]”

Ray KurzweilThought Leader

Inventor, futurist and author of The Age of Spiritual Machines

Hard disk drives were still shipping by the hundreds of millions in 2019 and carried most data-center bulk storage; the word 'fully' makes the prediction plainly false, and assessors in Armstrong's survey graded it false.