By popular demand, here is the official Mystery Grove Film Recommendations list. Watch all of these in order if you want to truly understand the world we live in today.

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OK. Chapter 7 of Book 4 of #WealthOfNations is tough going. It's long. It's serious. It's all about colonies.

We can take comfort, though, in knowing that the chapter #AdamSmith says is about colonies is, in fact, about colonies. (IV.vii) #WealthOfTweets #SmithTweets


Colonies were a vexed subject when #AdamSmith was writing, and they’re even more complicated now. So, before we even get to the tweeting, here’s a link to that thread on Smith and “savage nations.” (IV.vii) #WealthOfTweets


The reason for the ancient Greeks and Romans to settle colonies was straightforward: they didn’t have enough space for their growing populations. Their colonies were treated as “emancipated children”—connected but independent. (IV.vii.a.2) #WealthOfTweets #SmithTweets

(Both these things are in contrast to the European colonies, as we'll see.) (IV.vii.a.2) #WealthOfTweets #SmithTweets

Ancient Greeks and Romans needed more space because the land was owned by an increasingly small number of citizens and farming and nearly all trades and arts were performed by slaves. It was hard for a poor freeman to improve his life. (IV.vii.a.3) #WealthOfTweets #SmithTweets

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A brief analysis and comparison of the CSS for Twitter's PWA vs Twitter's legacy desktop website. The difference is dramatic and I'll touch on some reasons why.

Legacy site *downloads* ~630 KB CSS per theme and writing direction.

6,769 rules
9,252 selectors
16.7k declarations
3,370 unique declarations
44 media queries
36 unique colors
50 unique background colors
46 unique font sizes
39 unique z-indices

https://t.co/qyl4Bt1i5x


PWA *incrementally generates* ~30 KB CSS that handles all themes and writing directions.

735 rules
740 selectors
757 declarations
730 unique declarations
0 media queries
11 unique colors
32 unique background colors
15 unique font sizes
7 unique z-indices

https://t.co/w7oNG5KUkJ


The legacy site's CSS is what happens when hundreds of people directly write CSS over many years. Specificity wars, redundancy, a house of cards that can't be fixed. The result is extremely inefficient and error-prone styling that punishes users and developers.

The PWA's CSS is generated on-demand by a JS framework that manages styles and outputs "atomic CSS". The framework can enforce strict constraints and perform optimisations, which is why the CSS is so much smaller and safer. Style conflicts and unbounded CSS growth are avoided.