When my grandfather was born cars were so brand new they weren't mass produced - they were only toys for rich people. By the time he was my age he saw the introduction of flight, jet flight, and space flight. He saw the introduction of radio and television. He saw the first effective treatments for bacterial infections.

There hasn't been any period of time like that recently. Progress hasn't been accelerating. The reason we thought we'd have fusion power and moon bases and a cure for cancer is that's the trajectory we were on. So no, progress isn't accelerating at all. It's slowing down, and more perceptibly every day.