I know this is a side note, but I had never heard of worlds and I quite liked "forever war". Is it worth reading?
Just like "The Forever War" is a reply to "Starship Troopers", "Worlds" is a reply to "The Moon is a Harsh Mistress". I would put "Worlds" in a category like Pohl's "Gateway" (but not the sequels to Gateway) in that it reads more like literature than genre fiction.
The copy of Worlds that I have has a false copyright date (I think 1954) and I was thinking "... they didn't have lasers in 1954" and "... they sure didn't have O'Neill colonies in 1954". I think the fake date was no accident but part of the homage.
Personally I think you should beam yourself into the past and tell your former self to read Worlds... It's that good.
Side note: am I the only one who loved "Gateway", when the Heechee and their ships and artifacts were mysterious and almost unknowable -- the whole "we think ships of size 5 or 1 are dangerous. Also these colors are probably good, and we think these are bad" -- but was disappointed when the Heechee finally made their appearance and lost some of their mystery?