You might say “well there’s a 50-percentage-point difference at each of those two steps” and think I’m being inconsistent in donating to AMF and not GAVI. But if I try some expectation-value-type calculation, I’ll be multiplying the impact of AMF’s work by 50% and getting something comparable to SCI, but getting something close to zero for GAVI.
Probability that they’ll need my money soon:
GAVI: ~0%
AMF: ~50%
SCI: ~100%
You might say “well there’s a 50-percentage-point difference at each of those two steps” and think I’m being inconsistent in donating to AMF and not GAVI. But if I try some expectation-value-type calculation, I’ll be multiplying the impact of AMF’s work by 50% and getting something comparable to SCI, but getting something close to zero for GAVI.