Except people in the first quarter of the 20th century did talk about the 21st century. https://www.upworthy.com/11-ridiculous-future-predictions-from-the-1900

Except people in the first quarter of the 20th century did talk about the 21st century. https://www.upworthy.com/11-ridiculous-future-predictions-from-the-1900-worlds-fair-and-3-that-came-true-rp2 https://www.upworthy.com/11-ridiculous-future-predictions-fr...