What if you lived on a newly discovered planet somewhere and, unbeknownst to you, someone decided to make agreements among themselves claiming all the land, and then started selling the land back and forth under your feet. In that case, would you really be a trespasser?
Because, at some point in the past, that's exactly what happened.
I am not one of those claiming "we" should "give the land back to the original owners", because those people are long dead, and there is no way to know who would have owned that land now had the original theft never taken place.
It's just something I was thinking about. I guess it just means you had better stake a claim, and be willing to defend it with violence, in the event of new land becoming available.
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