Anonymous ID: 9200ff May 6, 2019, 8:23 p.m. No.6434463   🗄️.is 🔗kun   >>4586

I humbly request all ANONS watch this when we don't have nothing better to dig. It is 1 hr 15 minutes of you time that can be useful in the future.

 

Exponential Growth Arithmetic, Population and Energy, Dr. Albert A. Bartlett