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Once again, XKCD is very cool.
Today's xkcd is very cool.
Or maybe I'm just into economics, relativity and quantum electrodynamics. -
Intermittently reading: The Collecte Stories of Roger Zelazny
The Collected Stories of Roger Zelazny, by Roger Zelazny ( Read more... ) -
Recently seen: Toy Story 3 (in 3D)
This evening Beth and I went out to see Toy Story 3. It's certainly a worthy sequel to the previous Toy Story movies, up with the best movies Pixar has made. (Though, on reflection, I still like Incredibles a bit more ( Read more... ) -
Recently read: The Big Short
The Big Short, by Michael Lewis ( Read more... ) -
Recently read: Priceless
Priceless, by William Poundstone ( Read more... ) -
Recently read: Bartholomew and the Oobleck
Bartholomew and the Oobleck, by Dr. Seuss
This is the sequel to The 500 Hats of Bartholomew Cubbins, in which King Derwin decides that the existing weather is unsuitable, asking his magicians for something new. Bartholomew, now a page boy, has to help with the consequences ( Read more... ) -
High frequency trading: A consequence of payment for order flow
I'm somewhat bemused by the various discussions of high-frequency trading. It's in the news a bit more following the 16-minute panic, but there have been discussions of why it might be fair or unfair for a while ( Read more... ) -
Suspiciously scale-free stock price movements
Looking at the price graph for Thursday's stock market crash, I was struck by how very close to exponential the curve looked. That suggests to me that the effect is a feedback loop, and not the result of an extra-large trade or other error ( Read more... ) -
Sysadmin instincts
It feels very strange, wrong even, to run something like: dd if=some_file of=/dev/sda.
But that's probably the best way to restore my laptop, as I stripped most of the stuff off the disk before I sent it in for repairs.
It seems to be working again, which is very nice. -
Two kinds of traders
There appear to be two kinds of traders: Those that don't believe mathematical models enough, and those that believe them too much.
Trading on gut instinct can get you into trouble, but trading based on a bad model can get you into even more trouble.