Alexlexlex

It is maddeningly frustrating to try to explain the incoherent assemblage of heuristics that is reinforcement learning.

Quite a few people are asking why Angela Rayner didn't just put a call into the head of HMRC.

That would be wildly improper in 2025. However it was absolutely the done thing in 1925

A completely tangential thread:

arxiv.org/pdf/1806.09460

A case of regress in applied econometrics: Arellano Bond 91 on feedback in panel data was the most cited econ paper of all time. Recent focus on DiD, with or without heterogeneity, has given us methods which fail under feedback, which is omnipresent in dynamic models. A useful reassessment here:

In 1953, RAND had "extensive computing facilities". However, their researchers were frustrated about the long delay between submitting a computation request and receiving their answer. 🧵

Madmen in authority, who hear voices in the air, are distilling their frenzy from some academic scribbler of a few years back

www.ft.com/content/0c21...

www.amazon.co.uk/dp/0593285999 develops a similar argument. It's ironic that Warren was also heavily involved with the credit card industry with a rather different agenda.

@wwwojtekk.bsky.social

Late night London Bars, pubs and clubs open after 2am. Hover over the markers for more information View map for:  Thursday |  Friday |  Saturday

Long gone are the days when I would stay out in London until 4am or 5am. But for those nightbirds still treading the tiles, this is a great set of maps by @matildakdavies.bsky.social showing where you can find pubs and clubs still open at those times datawrapper.dwcdn.net/mSomR/1/

Ten Minutes Older - Wikipedia

Ten minutes older: en.wikipedia.org/wiki/Ten_Min...

There is an exhaustive exposition: www.anderson.ucla.edu/faculty_page...

Madrid is two hours away on a train and is probably more interesting with more museums, restaurants and day trips in all directions.