This is a fun little book that acts as a completely straightforward guide to time travel in the future (which has, of course, been sent back through time so that when time travel is invented we will already know the rules.) Very strange. It's not jokey at all, in fact it reads almost exactly like a Rick Steves guide. It appears to be out of print, but if you're a fan of time travel science fiction I would recommend getting a used copy - it's great fun!
This was kind of awesome. A friend lent this to me on a lark and I ended up having a lot of fun with it. It's pretty much a time travel manual written in the future, when time travel has been regulated and commercialized. It's played very straight for the most part, but it's clearly tongue-in-cheek. The world-building is kind of insane. It's so detailed that it seems like it actually was a book sent from the future. Wacky, high-concept stuff.
War eine kurzweilige Lektüre zwischen Spekulation und Fantasie. Es gab eine kurze Einführung in die phsysikalisch-spekulativen Grundlagen der Zeitmaschinen. Und natürlich Hinweise darauf, wie man sich in den verschiedensten Zeiten verhalten sollte, um ja kein Zeitparodox zu erzeugen. Wenn ich mich recht erinnere, lagen die Reiseziele hauptsächlich in der Vergangenheit.