[Ed Kolis]

Yep, the tech ones mean something interesting. However, there might be a few generic descriptions that LOOK like the ruins ones but aren't - a few I can think of is "This planet is the final resting place of two ancient cultures" and "This planet contains the ruins of an ancient civilization". You can tell the real ruins planets because they have a separate description for the ruins attribute below the normal description, in a larger font with a bullet point next to it.