Places to drink in Paris

Some brief notes on places to drink in Paris.

Martin Oldfield, 15 Dec 2009

Places to eat in Paris

Some brief notes on places to eat in Paris.

Martin Oldfield, 15 Dec 2009

Sons and Daughters

On of the Internet's recurring memes is a world where families have children until they have a son, then stop. There seems to be a fairly common misapprehension that this will lead to some asymmetry of sexes in the next generation.

This short note explores this question: we quickly see that symmetry is preserved, but then spend time exploring what's going on in more detail.Finally we introduce a new element to the model which, on its own, favours neither boys nor girls, but allows social engineering to skew the sex distribution.

Martin Oldfield, 06 Dec 2009

Faking geocaches in Garmin GPX files

Garmin GPS receivers have a special mode to handle geocaches, but it's not been clear to me how the gadget decides which waypoints are geocaches. These brief notes describe something which works for me.

Martin Oldfield, 06 Dec 2009