"“what difference does it make” 233 or 235 it is only nuclear."
It makes a huge difference in how reactors for each must be designed, as the neutron economies (reaction cross-sections, number of neutrons generated per fission, and more) are significantly different for the two isotopes.
22 posted on 01/31/2015 11:21:41 AM PST by Wonder Warthog
(Newly fledged NRA Life Member (after many years as an "annual renewal" sort))