class: middle, center background-image: url(public/images/space1.jpg)  </br> --  --                  --- class: middle, center # hi my name is @ag_dubs --- class: middle, center  --- class: middle, center, space-turtle background-image: url(public/images/space2.jpg) # our picture of the universe .turtle[] --- class: middle, center  ##### http://npmjs.com. Accessed 7 September 2016. --- class: middle, center  ##### http://modulecounts.com. Accessed 7 September 2016. --- class: middle, center # `require('dijkstra');`  --- class: middle, left > The programmer is in the unique position... He has > to be able to think in terms of conceptual hierarchies that are much deeper than a single mind ever > needed to face before... the automatic computer confronts us > with a radically new intellectual challenge that has no precedent in our history. ### Edsgar Dijkstra ##### On the cruelty of really teaching computing science, EWD1036-0. --- class: middle, center, space-turtle background-image: url(public/images/space4.jpg) # what is modularity? .turtle[] --- class: middle, left > Modular programming is a software design technique that > emphasizes separating the functionality of a program into > independent, interchangeable modules, such that each contains > everything necessary to execute only one aspect of the desired > functionality. ##### Modular Programming. Wikipedia. https://en.wikipedia.org/wiki/Modular_programming. Accessed 9 May 2016. --- class: middle, center  --- class: middle, center  --- class: middle, center  --- class: middle, center  --- class: middle, left > It's all about containing complexity... By making small focused modules you can > easily build large complex systems without having to know every single detail of > how everything works. Our short term memory is finite. ### sindresorhus ##### https://github.com/sindresorhus/ama/issues/10#issuecomment-117766328 --- class: middle, left > When applications are done well, they are just the really application-specific, > brackish residue that can't be so easily abstracted away. All the nice, reusable > components sublimate away onto github and npm where everybody can collaborate to advance the commons. ### substack ##### http://substack.net/how_I_write_modules --- class: middle, center # communism all the way down? --- class: middle, center  --- class: middle, center # `require('gall');`   --- class: middle, left > A complex system that works in invariably found to have > .highlight[evovled from a simple system that worked]. A complex system > designed from scratch never works and cannot be patched up > to make it work. You have to start over with a simple system. ### John Gall --- class: middle, center # `require('ceejbot');`  --- class: middle, left > Your monolith is complex. > A split system is .highlight[more complex]. ### CJ Silverio --- class: middle, center # `require('hickey');`  --- class: middle, left > Most of the big problems in software are problems of .highlight[misconception]. ### Rich Hickey ##### "Hammock Driven Development". Clojure Conj, 2010. https://www.youtube.com/watch?v=f84n5oFoZBc. --- class: middle, center, space-turtle background-image: url(public/images/space3.jpg) # how wrong are we .turtle[] --- class: middle, left > The more I modularize my code. The bigger it gets. ### Nolan Lawson > Over 400ms is being spent simply walking the Browserify tree. ### Sam Saccone ##### "The cost of small modules". Read the Tea Leaves. 15 August 2016. --- class: middle, center  --- class: middle, center  --- class: middle, center  --- class: middle, center # `require('parnas');`   --- class: middle, left > [Start] with a list of difficult design decisions or design decisions which are .highlight[likely to change.] > Each module is then designed to .highlight[hide such a decision] from the others. ### David Parnas ##### Parnas, D. L. 1972 On the Criteria To Be Used in Decomposing Systems into Modules. Association for Computing Machinery, Inc: Programming Techniques, 1053-1058. --- class: middle, center  --- class: middle, left > Here we demonstrate that the ubiquitous, direct selection > .highlight[pressure to reduce the cost of connections] > between network nodes causes the emergence of modular networks. ##### Clune J, Mouret J-B, Lipson H. 2013 The evolutionary origins of modularity. Proc R Soc B 280: 20122863. http://dx.doi.org/10.1098/rspb.2012.2863 --- class: middle, center <iframe width="640" height="480" src="https://www.youtube.com/embed/SG4_aW8LMng" frameborder="0" allowfullscreen></iframe> --- class: middle, center # `require('hawking');`  --- class: middle, left > It is an interesting reflection on the general climate of thought > before the twentieth century that .highlight[no one had suggested that the] > .highlight[universe was expanding or contracting.] ### Steven Hawking ##### A Brief History of Time. Bantam Books Trade Paperbacks: 6, 1988. --- class: middle, center, space-turtle background-image: url(public/images/space4.jpg) # how to computer? .turtle[] --- class: middle, center # `require('sartre');`  --- class: middle, center  --- class: middle, center # `require('tef');`  --- class: middle, center # none of us are born knowing how to write software --- class: left, middle # `npm install abriefhistory` <code> { "name": "a brief history and mishistory of modularity", "author": "ashley williams @ag_dubs", "version": "1.0.0", "dependencies" : { ["On the Cruelty of Really Teaching Computer Science"](https://www.cs.utexas.edu/users/EWD/transcriptions/EWD10xx/EWD1036.html), ["A Brief History of Time"](http://www.hawking.org.uk/a-brief-history-of-time.html), ["Hammock Driven Development"](https://www.youtube.com/watch?v=f84n5oFoZBc), ["Design, Composition, Performance"](https://www.infoq.com/presentations/Design-Composition-Performance), ["Write code that is easy to delete, not easy to extend."](http://programmingisterrible.com/post/139222674273/write-code-that-is-easy-to-delete-not-easy-to), ["Cheating Gall's Law"](https://vimeo.com/128796804), ["The cost of small modules"](https://nolanlawson.com/2016/08/15/the-cost-of-small-modules/), ["How I write modules"](http://substack.net/how_I_write_modules), ["In Defense of Hypermodular JavaScript"](https://medium.freecodecamp.com/in-defense-of-hyper-modular-javascript-33934c79e113#.o8o9taoht) } </code> --- class: middle, center background-image: url(public/images/space1.jpg)