What I like about cycling

  • It’s faster than walking.

What I don’t like about cycling

  • Umbrella incompatibility when it’s raining.
  • Sweating when trying to get somewhere fast.
  • Certain car/bus/truck drivers.
  • Potholes.
  • My bike chain coming off every few days.
  • My extremely squeaky breaks.
  • My bike getting stolen. 🙁

Moved: Welcome to my new online home

I have just copied my website hosted on to a self-hosted WordPress installation at

If anything does not work as expected, please let me know.

Old links and bookmarks to content on will continue to work for the time being, but the content there will not be updated.

To continue following my blog, please update your subscriptions:

Incidentally, I am also about to move house (back to Oxford) and office (to the new Oxford University Mathematical Institute).

Know it all!

This recent tweet

which expands to “Now I know how I know that I know what I know.” reminded me again of the song “Besserwisser” (Know-It-All) by the German Acapella group Wise Guys. I fear, the beginning of the chorus will be stuck in my head for the next few days:

Ich weiß, was ich weiß,
doch nur das, was ich nicht weiß,
macht mich heiß, weil ich’s gerne besser wüsste.
Weißt du was? Du musst wissen,
dass ich wirklich gerne wüsste,
was ein Besserwisser besser wissen müsste.

This loosely translates to:

I know what I know
but I only care about
what I don’t know,
You know? [You need to know] that I’d really like to know
what a know-it-all
all needs to know.

(Improvements are very welcome, especially those that make it rhyme.)

The song continues with a praise to science, asking all kinds of questions about everyday science, such as why foam from green shampoo is white, but also some less serious ones, such as about the frustration of an erased pencil stroke. The full German lyrics are available online. I didn’t find an English translation, so I let Google Translate give it a try. … Oh well.

Enjoy responsibly!