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Puzzle #224 from the New Scientist is: I collect Russian dolls, the type where each doll can be opened to reveal a smaller one inside. I am particularly fond of my simple, single-coloured ones, which come in sets of five (and, unusually, have a hollow smallest doll).

Puzzle #212 from the New Scientist is: “Why isn’t the sound working?”, Mum muttered as she hit the mute key on the remote control. “You’ve probably got the wrong remote, Mum”, Sam said.

This week’s puzzle goes as follows: My son’s book of mathematical magic tricks includes this one: Think of a whole number from 1 to 50. Add 9 and double the result.

The article by Matsuo et al. (2019) appeared in my newsletter. It is another attempt to sell deep-learning (DL) as a promising alternative to traditional survival analysis. To this end, they compare the performance of their DL model to Cox proportional hazard regression (CPH) when predicting survival for women with newly diagnosed cervical cancer.

QWERTY has become the dominant keyboard standard, used by billions of people every day. The basic QWERTY form was developed in 1873 and was based around four rows with eleven characters in each row.

The most common discussion around Earth concerns how we are shaping our planet. Origins is all about “how the Earth made us”. Origins: How the Earth Shaped Human History, Lewis Dartnell, Vintage Publishing (2020)

Standard survival data measure the time span from some time origin until the occurrence of the event of interest. In the interpretation of results of survival analyses, competing risks can be an important problem.

Another puzzle from the New Scientist - #134: Can you work out which keyboard to hack?. It goes as follows: James Blond edges along the corridors of the supervillain’s base, and comes to two locked doors, each with a keypad that requires a four-digit code.

Solution to #131 “The Paradise Club” puzzle from the New Scientist. This week (No 3352 - 18 September 2021) the New Scientist posted the following puzzle: Down at The Paradise Club, Gus and Bart take it in turns to roll a pair of dice.

Shall I display my data using a table or a graph? The usual answer is: it depends. Mostly, it depends on who the audience is and how the data will be used.