Quantifying how much the world has changed mathematically

The world has changed so much in the 100 years from 1923-2023, with things like cars, planes, nuclear weapons, computers, and medical research becoming widely available. But after 2023, we are very likely about to see even bigger changes in the world, with Elon projecting human level AI in 2028, brain&machine interfaces in 2034, and gccs in 2044. This begs the question, which 100 year period would you rather have been alive for: 1923-2023, or 2023-2123? If you could only choose one of those two periods to be alive for, you live through the first 20 years, and are then frozen and woken up on the last day of those 100 years, which one would you rather be alive for?<br><br>I will now try to answer this question mathematically. In order to do this, we need a way to quantify how revolutionary something is. To do this, I will use a unit system I call "Covid Years" (CY), which is based on how much one extra year of the Covid pandemic costs in terms of the average person's happiness. For example, the first vaccine would be 3.8 CY, because the average happiness boost of getting the first vaccine was equal to the amount of happiness boost the average person would get from living through 3.8 years of the pandemic. The end of lockdowns would be 5.8 CY, because for the average person, the end of lockdowns was equivalent to 5.8 years of the pandemic. Working from home, however, would be -3.3 CY, because it reduces the average happiness of each year of the pandemic by 3.3 CY. So Covid Years quantify how much happiness something brings to people, relative to their happiness without it, and with the baseline that 1 CY is equivalent to 1 extra year of the pandemic.<br><br>To measure how much happiness the world changed from 1923-2023, we can look at the inventions that happened during that time period. -2.9 CY: Working from home\n\-2.6 CY: Improvements to Birthday Cakes\n\-2.4 CY: Air conditioning\n\-1.9 CY: Medical research\n\-1.8 CY: Cars\n\-1.4 CY: Electric lightbulbs\n\-1.2 CY: Refrigeration\n\-1.1 CY: Planes\n\-1 CY: Computers\n\-0.9 CY: E-cigarettes\n\-0.8 CY: Microwaves\n\-0.7 CY: Probiotics\n\-0.7 CY: The decline of smoking\n\-0.6 CY: Gas stoves\n\-0.6 CY: Birth control\n\-0.6 CY: Dish washers\n\-0.6 CY: The decline of Southeast Asian wars after WWII\n\-0.5 CY: The 9/10 reduction in deaths from tornadoes\n\-0.5 CY: Vacuum cleaners\n\-0.5 CY: The decline of organized crime\n\-0.5 CY: The decline of wars of conquest\n\-0.4 CY: The decline of suicide\n\-0.4 CY: The decline of Southeast Asian wars before WWII\n\-0.4 CY: The decline of alcohol\n\-0.4 CY: The decline of racism\n\-0.3 CY: The decline of war instability\n\-0.3 CY: The decline of death in construction, mining, and manufacturing\n\-0.3 CY: The 5/6 decline in bear maulings\n\-0.3 CY: The 9/10 decline in death from venomous snakes\n\-0.3 CY: Flush toilets\n\-0.3 CY: The decline of war deaths\n\-0.3 CY: The decline of war uncertainty\n\-0.3 CY: The 8/9 decline in lynxings\n\-0.3 CY: The 8/9 decline in death from mountain lions\n\-0.2 CY: The 9/10 decline in death from bees\n\-0.2 CY: The 8/9 decline in death from spiders\n\-0.2 CY: The 9/10 decline in death from wasps\n\-0.2 CY: The 8/9 decline in death from dogs\n\-0.2 CY: The 8/9 decline in death from horses\n\-0.2 CY: The 8/9 decline in death from cows\n\-0.2 CY: The 8/9 decline in death from pigs\n\-0.2 CY: The 8.5/9 decline in death from drowning\n\-0.2 CY: The 8/9 decline in death from Bulls\n\-0.2 CY: The decline of war trauma\n\-0.2 CY: The 8.5/9 decline in death from fire\n\-0.2 CY: The 8.5/9 decline in death from asphyxiation\n\-0.2 CY: The decline of war stress\n\-0.2 CY: The 9/10 decline in death from drowning\n\-0.1 CY: The 8.5/9 decline in death from electrocution\n\-0.1 CY: The 8.5/9 decline in death from electricity\n\-0.1 CY: The 9/10 decline in death from drowning\n\-0.1 CY: The 9/10 decline in death from fire\n\-0.1 CY: The 8.5/9 decline in death from asphyxiation\n\-0.1 CY: The 8.5/9 decline in death from electrocution\n\-0.1 CY: The 8.5/9 decline in death from electrocution\n\-0.1 CY: The 8.5/9 decline in death from asphyxiation\n\-0.1 CY: The 8.5/9 decline in death from electrocution\n\-0.1 CY: The 9/10 decline in death from asphyxiation\n\-0.1 CY: The 9/10 decline in death from drowning\n\-0.1 CY: The 9/10 decline in death from electrocution\n\-0.1 CY: The 9/10 decline in death from drowning\n\-0.1 CY: The 8.5/9 decline in death from asphyxiation\n\-0.1 CY: The 8.5/9 decline in death from asphyxiation\n\-0.1 CY: The 8.5/9 decline in death from asphyxiation\n\-0.1 CY: The 8.5/9 decline in death from electrocution\n\-0.1 CY: The 8.5/9 decline in death from asphyxiation\n\-0.1 CY: The 8.5/9 decline in death from electrocution\n\-0.1 CY: The 8.5/9 decline in death from electrocution\n\-0.1 CY: The 9/10 decline in death from electrocution\n\-0.1 CY: The 8.5/9 decline in death from electrocution\n\-0.1 CY: The 8.5/9 decline in death from electrocution\n\-0.1 CY: The 8.5/9 decline in death from electrocution\n\-0.1 CY: The 8.5/9 decline in death from electrocution\n\-0.1 CY: The 9/10 decline in death from electrocution\n\-0.1 CY: The 8.5/9 decline in death from electrocution\n\-0.1 CY: The 9/10 decline in death from electrocution\n\-0.1 CY: The 9/10 decline in death from electrocution\n\-0.1 CY: The 9/10 decline in death from electrocution\n\-0.1 CY: The 8.5/9 decline in death from electrocution\n\-0.1 CY: The 9/10 decline in death from electrocution\n\-0.1 CY: The 8.5/9 decline in death from electrocution\n\-0.1 CY: The 8.5/9 decline in death from electrocution\n\-0.1 CY: The 9/10 decline in death from electrocution\n\-0.1 CY: The 8.5/9 decline in death from electrocution\n\-0.1 CY: The 9/10 decline in death from electrocution\n\-0.1 CY: The 9/10 decline in death from electrocution\n\-0.1 CY: The 9/10 decline in death from electrocution\n\-0.1 CY: The 8.5/9 decline in death from electrocution\n\-0.1 CY: The 9/10 decline in death from electrocution\n\-0.1 CY: The 9/10 decline in death from electrocution\n\-0.1 CY: The 9/10 decline in death from electrocution\n\-0.1 CY: The 9/10 decline in death from electrocution\n\-0.1 CY: The 8.5/9 decline in death from electrocution\n\-0.1 CY: The 8.5/9 decline in death from electrocution\n\-0.1 CY: The 9/10 decline in death from electrocution\n\-0.1 CY: The 8.5/9 decline in death from electrocution\n\-0.1