The house that Jack built: Twitter’s founder departs

<p>Jack Dorsey’s <a href="https://www.economist.com/business/jack-dorsey-goes-square-leaving-twitter-at-a-time-of-his-choosing/21806545?utm_campaign=a.io&amp;utm_medium=audio.podcast.np&amp;utm_source=theintelligence&amp;utm_content=discovery.content.anonymous.tr_shownotes_na-na_article&amp;utm_term=sa.listeners" rel="noopener noreferrer" target="_blank">departure</a> from the social-media giant reflects the growing primacy of engineering talent, and the waning mythology of the big-tech founder. Ukraine’s military has become much better at battling Russian-backed separatists since the annexation of Crimea—but now a far graver kind of war <a href="https://www.economist.com/europe/the-ukrainian-army-has-got-better-at-fighting-russian-backed-separatists/21806546?utm_campaign=a.io&amp;utm_medium=audio.podcast.np&amp;utm_source=theintelligence&amp;utm_content=discovery.content.anonymous.tr_shownotes_na-na_article&amp;utm_term=sa.listeners" rel="noopener noreferrer" target="_blank">looms</a>. And the Economist Intelligence Unit’s latest <a href="https://www.eiu.com/n/campaigns/worldwide-cost-of-living-2021?utm_campaign=a.io&amp;utm_medium=audio.podcast.np&amp;utm_source=theintelligence&amp;utm_content=discovery.content.anonymous.tr_shownotes_na-na_article&amp;utm_term=sa.listeners" rel="noopener noreferrer" target="_blank">list</a> of the world’s most expensive cities.</p><p>Have your say about “The Intelligence” in our survey here&nbsp;</p><p><a href="http://www.economist.com/intelligencesurvey" rel="noopener noreferrer" target="_blank">www.economist.com/intelligencesurvey</a>. And for full access to print, digital and audio editions of <em>The Economist</em>, subscribe here <a href="http://www.economist.com/intelligenceoffer" rel="noopener noreferrer" target="_blank">www.economist.com/intelligenceoffer</a></p> &#10;&nbsp;<br /><hr><p style='color: grey; font - size: 0.75em; '>See <a style='color: grey; ' target='_blank' rel='noopener noreferrer' href='https://acast.com/privacy'>acast.com/privacy</a> for privacy and o