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Mark Olson's user avatar
Mark Olson's user avatar
Mark Olson's user avatar
Mark Olson
  • Member for 5 years, 5 months
  • Last seen this week
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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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Top posts
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All Questions Answers
Score Newest
answer
89
Did Aztecs know how many continents there are on earth?
Mar 2, 2021
answer
87
When did the Roman Empire fall according to contemporaries?
Jul 11, 2019
answer
76
How did the general population of England convert so smoothly to Protestantism?
May 22, 2018
answer
52
Why did Lincoln wait to issue the Emancipation Proclamation?
Jan 16, 2019
answer
45
What is the difference between the Ancient Greek religion and the Ancient Roman religion?
Nov 1, 2019
answer
30
What is the pre-schism Christian church called today?
Jul 17, 2018
answer
23
Was Mary Stuart's execution not accompanied by attainder?
Aug 6, 2022
answer
21
Why does the US use the opposite convention to the rest of the world for colour-coding harbour buoys?
May 19, 2022
answer
20
Who presided over the election and swearing in of the first Speaker of the House?
Jan 5
answer
19
Why did Germany decide not to restore the Hohenzollern dynasty to the throne of a German Empire after the defeat of Hitler in World War Two?
Apr 2
Top network posts
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293
What did Frodo and Sam eat when they crossed Mordor on foot?
121
How far did Gandalf and the Balrog drop from the bridge in Moria?
121
What's the big deal about the Nazgûl losing their horses?
108
My time machine needs to know when it is
103
Was Tolkien good at his day job?

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