I don't have enough content from the article to write a complete and accurate summary. You've only shared the introduction/header section of the article, which mentions the author Colin and his mission to spread mathematical joy, but doesn't include the actual mathematical content of Issue 70.
Could you share the full article text? Once I have the complete content, I'll write a clear and engaging 3-paragraph summary for mathopen.com that captures the key mathematical ideas Colin covers in this issue.