I'm a well read grad student who's bluntly honest about all things, although I try to be most honest about myself.
This would be a four star book - if it were only Haldeman's story, and if this were better edited. And while I've had 100% positive interactions when sending positive reviews to authors, I've also erred on the side of caution. If there is anything that would make an author feel uncomfortable, I've tried not to send it. So far it's all been positive and I've sent them, but I knew about a fourth of the way into the Benford story I wouldn't be sending this one out.
Do the authors even know each other? Maybe not. But can you imagine getting a review where it's like 'I loved your story, but lulz, no to this author who writes in the same genre and subgenre as you?'
I would feel mighty awkward. In the case that another person might - and I feel that there is the strong likelihood that they might - I will not be sending this. I will also be calling out the multiple editing errors in this, which I suspect is on the publisher. (Bedford's story had the same type of errors, and again, it could get awkward.)
That being said, here's the signature Haldeman left me:
Yay! I also have a story: I pulled out my pen, which is glittery. And smells like blueberries. And he goes, 'wait, does that smell like blueberries?' And I shrug, and answer, 'yeah, kinda, but not much and it goes away soon...'
So he lifted the book. I got an author to smell their own book which amuses me. But, damn, I am carrying these pens around next year: signatures look so pretty when they're glittery!