That is the question this series raises again and again - and the answers are mostly quite interesting. If not always interestingly written
The Embrace of Cold Architects...
... asks, what would have happened, had Riker not stopped the annihilation of the Borg-cube with Locutus on board. The new Cpt. of the ENTERPRISE-D has to fight with his own conscience, while the story with Data and Lal goes into a totally different direction.
Interesting story but the perspective mainly used here underutilises the possibilities for the showing of moral complexities which is really sad.
The Tears of Eridanus...
... makes the Andorians the first partners of humankind when it enters interstellar space because the Vulcans are still busy killing each other for missing an important peace-preaching philosopher. On the eve of a war with the Klingons Cpt. Hikaru Sulu is supposed to get some telepathic weapons from the Vulcans and to try to free some hostages they have taken. One of the hostages is his daughter Demora.
Here we have a philosophically and psychologically quite well-written text that really makes the pages hum.
Honor in the Night
History is written by the winners a young reporter learns as she starts to walk on the tracks of Kirk's and McCoy's experiences while losing the fight for Sherman's planet ("The Trouble with Tribbles"). Here history goes a quite different way from the one we're used to. And the question is if it should be published at all to keep the gains some very big old lies have gained. Interesting especially in connection with the discussions about Wiki-Leaks.
Apart from the problem in "The Embrace of Cold Architects " highly readable.