On Wed, 3 Oct 2018 18:55:39 -0700 (PDT), Gary Harnagel
wrote:
Although it is true that relativity and quantum mechanics did
revise the
very roots of physics, even if the outcome in everyday life
didn't change
much.

Umm, looked at your I-phone lately?

Far from everyone has I-phones. As a matter of facts, some 90% of all
smartphones are not I-phones.