The Invention
TL;DR
The greatest invention (past, present, and future) is the Internet.
- humans are separated from animals by knowledge
- knowledge is primarily acquired via communication
- communication is made (trivially) realtime, async, omnipresent, “embarrassingly parallel” by the internet
- any “comments box” is a node into the resultant immortal “brain cloud” of current & future generations
- at best, future innovations can only optimise the internet, so cannot be considered greater inventions