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Alan Kay, 2015: Power of Simplicity

Kenneth Friedman6 HN recommenders · recommended in 7 months, 2015–2025
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talk · general · evergreen · 2015–2025 on HN

Alan Kay's 2015 talk on the power of simplicity, arguing that systems become simpler by building on more sophisticated fundamental building blocks and that big research horizons drove invention at Xerox PARC. It ranges across computing, tools and scaling soft…

HN repeatedly cites it as a thought-provoking talk on reducing software complexity and on the state of computing research.

12 comments from Hacker News

@vhiremath42024-03 · in “Alan Kay's talk at UCLA – Feb 2024 [video]”

Highly recommend his talk on the power of simplicity. This was one of those lightbulb moments for me when I was a younger programmer: ▶ this video

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@josteink2016-02 · in “Rich Hickey Fanclub”

Completely unrelated: Alan Kay - the power of simplicity ▶ this video Easily over of the most thought provoking presentations I have seen recently.

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@mablopoule2025-12 · in “Don MacKinnon: Why Simplicity Beats Cleverness in Software Design [audio]”

In his "Power of Simplicity"[1] talk, Alan Kay had a great illustration of this specific phenomenon using astronomy: Before Johannes Kepler had the insight of describing the orbits of the planets with ellipsis, peoples were using the (conceptually simpler) circles which didn't completely match the observed movement of celestial body such as Mars, thus resulted in complicated circle-within-circles orbits to try to model reality. By introducing a more complex basic shape (ellipsis instead of circle) which happened to match the underlying reality more, the overall description of orbits got greatly simplified. It's a phenomenon I've seen a few time in my career so far: that while often there's complex code because there are actually complex hedge case to handle (essential complexity), sometime it's really because the data structure used to model the thing you're handling is slightly missing the mark, making things fit almost-but-not-quite, and many operation done around to handle data can be greatly simplified (if not avoided altogether) by changing the underlying data-structure. (Also, Alan Kay apparently did another talk called "Is it really complex, or did we just make it complicated"[2] that seems pertinent to the thread, though I haven't watch it yet) [1] ▶ this video [2] link

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@fovc2019-12 · in “Simple Software Manifesto”

Not sure which generation you're in and which generation you'd (relatively) consider Alan Key in, but here is a much more principled approach to what the OP is trying to do: ▶ this video The TLDW is that Kay thinks we haven't discovered all the fundamental rules of computing, a la Maxwells Equations for physics. If you are able to figure these out, you can substantially cut down your accidental complexity. FWIW, my unscientific view is that achieving simplicity is really hard and doesn't scale people-wise. Instead of C99 without a bunch of stuff, I'd probably use Scheme to create very dense (lots of bespoke abstractions and idioms) but simple software. That approach works reasonably well, but try onboarding a new developer!

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@a_d2018-04 · in “Ask HN: What is your favourite tech talk?”

Bret Victor - Inventing on principle link Alan Kay - Power of Simplicity ▶ this video Steve Jobs - Marketing (unveiling Think Different) link Robert Cialdini - On Influence link Peter Thiel - On Zero to One (Notes on Starts Ups or How to Build the Future) link Naval Ravikant on Reading, Happiness, Systems for Decision Making, Habits, Honesty and More (Farnam Street podcast) link Josh Wolfe - On "This is who you are up against" podcast link Richard Feynman - Fun to Imagine link Paul Graham - Startup school (2008) link James Burke - Connections (BBC documentary) <No link> Jim Al-Khalili tells the story of the Atom (BBC) link Elon Musk's 2003 Stanford University Entrepreneurial Thought Leaders Lecture link Ken Robinson - Do schools kill creativity? link Paul Stamets on mycology, bioremediation and fungi- Joe Rogan Experience link

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