Speculatively introducing a hypothesis: It’s easier to notice a difference like
N years ago, we didn’t have X. Now that we have X, our life has been completely restructured. (Xϵ{car, PC, etc.})
than
N years ago, people sometimes died of some disease that is very rare / easily preventable now, but mostly everyone lived their lives mostly the same way.
I.e., introducing some X that causes ripples restructuring a big aspect of human life, vs introducing some X that removes an undesirable thing.
Speculatively introducing a hypothesis: It’s easier to notice a difference like
than
I.e., introducing some X that causes ripples restructuring a big aspect of human life, vs introducing some X that removes an undesirable thing.
Relatedly, people systematically overlook subtractive changes.