Roots! Many many many changes in the later versions, but this is (close to) the start of it all. Always fun to look at the differences. The main thing is, Adams makes me laugh. Has done so for over 40 years. A quarter of the way through the 21st-century laughter is sorely needed most days. So I reread reread and reread.
Where would you like me to start quoting? Tell me when you've had enough...
Sorry I am incapable of giving a reasoned review of this work of genius. If you don't get it then no words of mine are going to make a difference. There should be a copy in every hotel room. There should be a radio channel permanently broadcasting the series on a continual loop. Etc.
I spent years trying to get my hands on a copy of this book, and it was a justified quest. The radio scripts are almost, but not quite, entirely unlike the novel.
Most of the first half is just the original version of plots that were in the first two books, but the second half gets into some good stuff that were never put into the books, or put in in a much more miniscule way. Real froody book.