>Very few people knew they even existed Does not mean they did not exist. See citations, below: https://en.wikipedia.org/wiki/Laser_printing https://en.wikipe

>Very few people knew they even existed Does not mean they did not exist. See citations, below: https://en.wikipedia.org/wiki/Laser_printing https://en.wikipedia.org/wiki/Laser_printing (see 2nd intro paragraph) https://en.wikipedia.org/wiki/History_of_email https://en.wikipedia.org/wiki/History_of_email (see 3rd intro paragraph)