In the early 21st century, very shortly after memory surgery first became practical but before it became cheap, two hundred and fifty people paid to have their mind-states stored alongside the battery of conventional scientific instruments on the TRIDENT space probe. TRIDENT was sent to observe Neptune and ultimately land on its moon Nereid. It would continue transmitting data until its radiothermal generator ran out, half a century later, and then lie dormant until it was destroyed by an asteroid, most likely billions of years later still. Mitchell Calrus was one of those people. And so,
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