I think your biology teacher is worried you might start getting younger as you keep buying older and older technology.
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BUYING? I don't think I've bought a single piece of my old technology. All of the old computers I got were all free. My DOS games I did buy: but they were "modern" back then.
And I'm not even going to ask where you spend your time finding all of those pictures. Unless that's your grandpa and aunt jemima during your christmas reunion.
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Even as a child, there were signs that Michael Jackson was going to be different to others.