TIL: number of retail gun shops in the US

https://www.statista.com/chart/783/number-of-gun-shops-in-the-united-states/

TIL: Rashomon effect

First suggested by Heider (1988), the term Rashomon effect is derived from the title of a 1951 film by the Japanese director Akira Kurosawa in which four characters who witnessed a crime later describe the event in different and contradictory ways. Unlike more traditional detective films, in which a single unified truth ultimately emerges, the complex message of Rashomon emerges when viewers are left to decide for themselves which, if any, of the four characters is telling the truth. Alternately, viewers may choose to construct their own truth by synthesizing the divergent accounts (Kurosawa 1969).

Glenn W. Muschert. Research in School Shootings, 2007. http://onlinelibrary.wiley.com/doi/10.1111/j.1751-9020.2007.00008.x/full

Need to see the movie again.

upd.

Watch on YouTube

(no subject)

I think these diagrams move me in the right direction. The idea is to transform a "limit" situation into a "colimit" situation.

upd. T needs to be a separate category with functors going into it from the SH category.

H <- R - > S

f: S -> p
g:H -> u

h: S->H
j: H ->S

S -> X
R -> X

Diminishing Returns on Guns

I wonder whether we've reached a point where buying more guns doesn't make us safer.

The good news is that by now most people understand that consuming more calories doesn't make them healthier.

(no subject)

Проблема в том, что если ограничить продажу оружия, то белые пожилые мужчины не смогут застрелиться.

Applied CT

Bartosz Milewski gets it right when he says that CT helps navigate levels of abstraction.

https://youtu.be/sx8FELiIPg8?t=45s

I should try to explain timing as a structure with 3 (or 4?) levels of abstraction, e.g. Coecke's work helps map effort to duration.

https://ncatlab.org/nlab/show/universal+construction