I've always thought the Rails installation instructions on the official Rails website were pretty straightforward, so I couldn't help laughing when I saw this chat transcript a friend copied and pasted for me:
[5:23:05 PM] X says: try so many times finally can le
[5:23:23 PM] X says: it is not about the version or wat
[5:23:46 PM] Y says: then what is the error?
[5:24:22 PM] X says: the gem install rails--include-dependencies
[5:24:37 PM] X says: between rails and --include got spacing
I know it's mean to laugh but I'm not a carebear! I think it took him a day to install it despite having installed and uninstalled it for 2 whole months (don't ask me why, but his environment kept getting borked).