If any harm follows, then you shall give life for life, eye for eye, tooth for tooth, hand for hand, foot for foot, burn for burn, wound for wound, stripe for stripe.
-- Exodus 21:23
In more modern understanding they're effectively the same; they're both the concept of an injured party taking revenge on the offender--the hebrews just condoned (even required) it legally.
The difference between revenge and justice is that justice usually requires a third party (usually a court) to ensure that things aren't done brashly or without forethought.
. . . and the principle is not really pure revenge. It's equal justice: The punishment should fit the crime. And that principle is still with us today, except we try to match the crime with money and jail time rather than with a more literal interpretation of that phrase. I'm uncertain of how literally the Isreal court systems interpreted it.
. . . and if you read verse 22, you'll find that particular context is talking about what to do if a fight causes a pregnant woman to give birth prematurely. I think the gist of the phrase is that the baby is to be treated like an adult: If you seriously injure the baby, it will be as if you seriously injured a full grown adult.
It's one small part of a larger set of legal guidelines. I do not think this was intended as soemthing for people to do personally, but rather as something that would guide a court system. The wording in my current translation is not first person (this is something you do), but rather third person (this is what is to be done), so I am assuming this is guidance for a legal system, not for personal revenge. Chapter 23 has some advice about lawsuits, so it does appear they had some form of a justice system in place.
I don't know why so many are having issues with Impulse.
In all honesty, it appears 99% of the time they're blaming Impulse for their poor internet connections. It's not as if Stardock has any control over the Internet, but they still seem to get the brunt of many complaints that should probably be aimed at ISPs.