Here is a 3-paragraph summary of the article for mathopen.com:
Double Maths First Thing is a newsletter written by Colin, a mathematician dedicated to making math fun, joyful, and accessible. Issue 69 brings his usual enthusiasm for mathematical thinking, along with a notable announcement about the direction of the newsletter going forward.
Colin has decided that Double Maths First Thing will no longer cover AI-related topics. While he is careful not to pass judgment on the subject, he feels this is the right direction for the newsletter, keeping its focus firmly on mathematics and the genuine delight that comes with exploring it.
The newsletter reflects Colin's core mission of spreading joy through math, reminding readers that mathematical thinking is worth celebrating on its own terms. Issue 69 continues that tradition, offering a friendly and engaging space for anyone who loves numbers, puzzles, and the beauty of mathematical ideas.