There is an airtight room in a University in Georgia (US), sealed in 1940, to be opened in the year 8113. The “Crypt of Civilization” contains a wealth of artifacts from literary works to everyday items.
The room’s contents include more than 800 works of every subject known to mankind; notable recordings, like Adolf Hitler ‘s speeches and birds singing; everyday items such as pantyhose, electric razors, and clothing; toys like a Donald Duck figurine and Lincoln Logs, and even strange items like “lady’s breast form.”
CRT's have a long afterglow so has plasmas, so there is defenetly no flicker as the cause of dogs not being "able" to see TV.
LCD's on the other hand was much hated at first because they could'nt refresh fast enough and that made them flicker.
Back then pc graphics cards didnt have refresh rates past 70Hz because there was no "need" for it as the CRT's could'nt keep up.
100 years ago some films was done in 16 pictures/second, does that mean that we cant see then because we would "only" see flicker?