4 ms·

PDF here: http://online.liebertpub.com/doi/pdf/10.1089/space.2017.29009.emu http://online.liebertpub.com/doi/pdf/10.1089/space.2017.2900... Interesting Venn di

by strin 9y ago

PDF here: http://online.liebertpub.com/doi/pdf/10.1089/space.2017.29009.emu http://online.liebertpub.com/doi/pdf/10.1089/space.2017.2900... Interesting Venn diagram in Fig 2. If "COST OF TRIP TO MARS" = "INFINITE MONEY", shouldn't "CAN AFFORD TO GO" be an empty set?