It's a puzzle that many inventions could have been invented much earlier than they were, using what was available at that time. My explanation was that they were partially invented, but died before being complete. My chart: pic.twitter.com/r04tBL9nHV
— Kevin Kelly (@kevin2kelly) February 15, 2020
from Twitter https://twitter.com/kevin2kelly
February 15, 2020 at 08:41AM
via IFTTT
No comments:
Post a Comment