The keyword is written as . The trailing hyphen is not a grammar error. It is an open loop. It implies that the cycle did not end in 2013. It is still running.
In 1972, reaction was a physical act—twisting a dial, hitting a button. The response was a blip on a screen. It was innocent. It was also the first domino. Reaction - Reaction -1972- 2013-
In 2023 and 2024, generative AI began reacting on our behalf. Auto-replies, chatbots, and synthetic content generation mean that soon, the “second reaction” won’t even need the human. The machine will react to itself. The keyword is written as
The Facebook Like button was introduced in 2009, but it achieved its final form by 2013. It is the perfect artifact of the two reactions: It implies that the cycle did not end in 2013
In 1972, you reacted to a game. In 2013, the game reacted to you—and then redesigned itself to keep you playing.