Why are you so confident that the first version of FAI we make will be safe? Doing both is safest and seems like it would be worth the investment.
Why are you so confident that the first version of FAI we make will be safe?
I'm not. I expect it to kill us all with high probability (which is nevertheless lower than the probability of obliteration if no FAI is actively attempted.)
Here's the new thread for posting quotes, with the usual rules: