I really like this idea. Here are some obvious ones:
Number of galaxys in the reachable lightcone: ~10^9 (this is conveniently pretty close to the total number of humans alive, so I sometimes like thinking that if we reach the stars, I might have ownership over ~1 galaxy) (Sourced from Eternity in Six Hours)
Number of stars in a galaxy: ~10^10 − 10^12 (also surprisingly close to the number of humans alive)
People alive: ~10^10
Chicken deaths in a year: ~10^10
U.S. Philanthropic donations per year: ~$10^11 - $10^12 ($450 billion in 2019)
U.S. Foundation donations per year: $10^11 ($77 billion a year
I really like this idea. Here are some obvious ones:
Number of galaxys in the reachable lightcone: ~10^9 (this is conveniently pretty close to the total number of humans alive, so I sometimes like thinking that if we reach the stars, I might have ownership over ~1 galaxy) (Sourced from Eternity in Six Hours)
Number of stars in a galaxy: ~10^10 − 10^12 (also surprisingly close to the number of humans alive)
People alive: ~10^10
Chicken deaths in a year: ~10^10
U.S. Philanthropic donations per year: ~$10^11 - $10^12 ($450 billion in 2019)
U.S. Foundation donations per year: $10^11 ($77 billion a year
I think that’s about right in the US, ~50 billion worldwide, but ~20 billion alive at any moment worldwide.
https://www.weforum.org/agenda/2019/02/chart-of-the-day-this-is-how-many-animals-we-eat-each-year/
OOps, yeah, good chance that I accidentally used a U.S. only source.
Given the donations / year figures, these seem relevant:
World Bank expenditures (inc. loans) per year: $10^11 ($61 billion)
UN expenditures per year: $10^11 ($48 billion)
EU expenditures per year: $10^12 ($182 billion)
ADB (Asian Development Bank) expenditures per year: $10^11 ($23 billion)
I think all figures were from around 2015, so these could now be different.
Some others are much smaller and therefore not included, such as GAVI, IMF, WHO, etc.
The last two should be 10^11 − 10^12 and 10^11, respectively?
Oops, that’s why you don’t try to do mental arithmetic that will shape the future of our lightcone at 1AM in the morning.