poke comments on Possibility and Could-ness - Less Wrong
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Comments (113)
The type of possibility you describe is just a product of our ignorance about our own or others psychology. If I don't understand celestial mechanics I might claim that Mars could be anywhere in its orbit at any time. If somebody then came along and taught me celestial mechanics I could then argue that Mars could still be anywhere if it wanted to. This is just saying that Mars could be anywhere if Mars was different. It gets you exactly nothing.