Longer, slower pieces from Varna Sri Raman on research, measurement, parenting, and the view from the edges of the development sector.https://idealog.works/en-inhttps://idealog.works/blog/the-edtech-tulna-question/https://idealog.works/blog/the-edtech-tulna-question/When every edtech product defines 'impact' differently, how do funders and schools compare them? A note on building a common framework for a sector that resists one.Fri, 10 Apr 2026 00:00:00 GMTedtechmeasurementeducationframeworkshello@idealogworks.com (Varna Sri Raman)https://idealog.works/blog/notes-on-measurement/https://idealog.works/blog/notes-on-measurement/A short explanation of why I am spending the next few years writing The Measurement Trap.Thu, 09 Apr 2026 00:00:00 GMTmeasurementthe-measurement-trapmelhello@idealogworks.com (Varna Sri Raman)https://idealog.works/blog/the-pearl-problem/https://idealog.works/blog/the-pearl-problem/In a country where the census has not been updated since 2011, how do you estimate what is happening at the block level? A note on small-area estimation and the politics of granularity.Thu, 09 Apr 2026 00:00:00 GMTmeasurementpearldatapublic-healthhello@idealogworks.com (Varna Sri Raman)https://idealog.works/blog/what-meena-manch-taught-me/https://idealog.works/blog/what-meena-manch-taught-me/In 2009, a school-based girls' collective in rural India started delaying child marriages. The mechanism was simpler and more radical than anyone expected.Thu, 09 Apr 2026 00:00:00 GMTgenderchild-marriageagencyfield-workhello@idealogworks.com (Varna Sri Raman)