Why has infrastructure and technology developed so quickly in the passed century but not so much before?

Question

Why has infrastructure and technology developed so quickly in the passed century but not so much before?

In: 3

Answer 1

90% of all scientists who have ever lived, are alive today, and a few hundred years ago half of all people worked in food production, now it’s a few %. Mechanization and synthetic fertilizers freed up enormous amounts of labor, some of which went towards inventions improving agricultural output even further, in a self-perpetuating loop.