After Great Mistake, 3 Factions "miraculously" recovered while Pan-African Union are ironically have the same economic problem like they have today.
If they want to imply that Africa (at least sub-Sahara) would never get out of these problems. Shame on them.
If they just want to make faction go along with today's stereotype we found in all of the 4 factions so far. Fair Enough and shame on them.
If they want to tell players how messed up Africa are and tell that to player whenever they will reboot this in distant future. Well. That's noble cause and shame on them.
As some others have said, that's being to itchy.... and missing a key phrase on Samatar's letter
"We didn't have time to build these things up, either..."
As others have said, it is safe to asume the Great Mistake did not change much, anyway, but it did trigger many movements, PAU as one of them. Whether PAC or ARC had to recover, they just had to recover/rebuild existing infraestructure, PAU had to create and grow a new world power... and they are on track...
But the seeding has a deadline, (or more to say, a kick-off line), and they are not reaching it at the pace they are growing. The letter does not say that in 50-100 years more they could not have matched the space programs of other nations, that they could have built an already educated workbase with which to support it. Probably they could.
But by then, the possibility to have an impact on the seeding would have gone away. All competitors could be already mid-way to their destination plantes, and they would reach there to late, without option to compete.
So... they had to trade some resources to speed up production... fair deal?. Samatar does not like it for sure, and probably there were hard negotiations. We are not sure either, if the ARC or Wu went out content of the negotiation table ¿what were their expectations?... maybe the price they paid to Barre was much higher than they expected (altough lower than Barre would have wanted). The key is: all them were on a Space Race, and all them were scarce on some resources (we saw a
PAC heated discussion on titanium use in last blog), but all them had to seat and trade what they needed, because there is no time to lose to find another home for man (
¿fear of long-lasting Great Mistake effects?). And of course, those who reach first a viable planet will have a great benefit (and Space Race victory

)
So far, in CIV terms: Barre traded Aluminium, for the techs he needed to start building right away the spaceship parts he was missing ... now the field is leveled to a production race... whoever can get the parts done first, wins.