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Mark Olson's user avatar
Mark Olson's user avatar
Mark Olson's user avatar
Mark Olson
  • Member for 3 years, 2 months
  • Last seen more than 3 years ago
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371
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About

I'm a retired chemical physicist-turned software developer and manager and a science fiction and history enthusiast living outside Boston.

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11
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1
Posts
33
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Posts
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3
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Posts
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