Monthly Archives: October 2021

Roman engineering

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Steven Pinker: Rationality Saves Lives

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Three Simple Maths Problems

Here are three simple maths problems that you should be able to do in your head:

  1. A smartphone and a case cost $110 in total. The phone costs $100 more than the case. How much does the case cost?
  2. It takes 8 printers 8 minutes to print 8 brochures. How long would it take 24 printers to print 24 brochures?
  3. On a field there is a patch of weeds. Every day the patch doubles in size. It takes 30 days for the patch to cover the whole field. How long does it take for the patch to cover half the field?

Solutions will be provided at a later date.

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Joseph Stalin: Waiting For Hitler (Part 2)

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Congo: The Epic History of a People by David Van Reybrouck (2010) – 2

One reason van Reybrouck describes his history of the modern Congo as ‘epic’ is because so much happens that it becomes quite bewildering. Possibly …

Congo: The Epic History of a People by David Van Reybrouck (2010) – 2

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What Sound DOES a Duck Make?

by Ken Greatorex You’d probably answer “QUACK!“ And indeed, you’d be right some of the time. Some ducks quack. Some don’t. Because I’m a Skeptic in …

What Sound DOES a Duck Make?

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