backward compatibility

TheRasteri upgrades a single PC through every Windows version, from early releases through Windows 10, testing that old software keeps running. It is an updated version of the Chain of Fools experiment.

Java Language Architect Brian Goetz talks at a Clojure conference about the challenges of evolving a mature language like Java while preserving compatibility with existing code and developer expectations. It also gives a look at where the platform is headed.

TheRasteri installs MS-DOS and Windows 1.0, then upgrades in place through nearly every Windows version up to Windows 7, checking which programs survive. Even Doom from 1993 still runs at the end.

Excerpts from Linus Torvalds's DebConf 14 talk on why desktop Linux struggles. He covers application distribution, distros breaking backwards compatibility, wasted package management effort and how Windows does app distribution better.

An AWS re:Invent session explaining Amazon's Working Backwards process, where teams start from customer needs and write a press release and FAQ (PR-FAQ) before building. It covers the five customer questions that frame the process.

Tom Scott explains why Windows does not let you name a file CON, tracing the reserved device names back to backwards compatibility with DOS.

Mike Boyd takes up Smarter Every Day's challenge to learn to ride the Backwards Brain Bike, a bicycle whose steering is inverted, and rides 50 meters. It shows how hard it is to unlearn a motor skill.

Titus Winters' CppCon 2017 talk argues for C++ and Google's Abseil to be maintained as a live at head language, relying on testing and automated tooling rather than never changing or promising no compatibility. It covers Hyrum's law and the limits of semantic versioning.

Destin of Smarter Every Day learns to ride a bicycle whose steering is reversed, taking about eight months, and compares it with how his young son learned much faster. It illustrates knowledge versus understanding and brain plasticity in adults versus children.

Rich Hickey's keynote on software versioning, arguing that breaking changes are the real problem and that libraries should only grow by providing more and requiring less. It critiques semantic versioning and ties into Clojure spec.

A 72-minute Q&A with Linus Torvalds at DebConf 14. Topics include the pain of distributing Linux binaries, distro fragmentation, kernel backwards compatibility, GPLv2 versus GPLv3 and conduct.

A Clojure/conj 2016 talk demoing Barliman, a prototype smart editor that does program synthesis. Given a partial program and tests, it completes the program using a relational interpreter written in miniKanren.

Andrew Kelley's Zig SHOWTIME talk on an experiment to ship static Linux executables that can do graphics and gaming, followed by an interview. It covers the problems of Linux binary stability, dynamic linking and the graphics ABI.

D. Richard Hipp's PGCon 2014 keynote on SQLite's relationship to PostgreSQL. He explains that SQLite was originally written from PostgreSQL 6.5 documentation and that the two engines serve different classes of problems.

Enderman gets Windows 11 running on a Pentium 4 system with a Radeon HD 5870 and 8 GB of DDR2. It explores how an unsupported, ancient CPU can be made to work by using the rare last Pentium 4 variant and a registry flag.

Jason Cohen's MicroConf talk on designing a bootstrapped business by starting from your own strengths, goals and constraints. He works backward to the business model, pricing, market and product that fit, with practical points like annual prepay and pricing tiers.

Rich Hickey's Clojure/Conj 2018 keynote argues that Maybe/Option types and rigid type signatures are a poor way to model data that changes over time. He builds the case around optionality, schema growth and compatibility, and presents the ideas behind Clojure spec as an alternative.

Matt Parker explains the history behind NTSC television running at 29.97 frames per second rather than 30, tracing it to the backward-compatible addition of color. He walks through the arithmetic behind the odd ratio.

A clean-audio clip from Apple's 1997 WWDC where Steve Jobs answers a hostile question from a developer about OpenDoc. He argues you must start with the customer experience and work backwards to the technology.

NCommander investigates why Space Cadet Pinball disappeared from Windows Vista, building on Raymond Chen's explanation about 64-bit incompatibility. He tests it on 64-bit Windows including Itanium and walks through the debugging.

Polylog explains how algorithms can be turned into circuits and encoded as satisfiability problems, which lets you effectively run them backwards. It uses this to motivate breaking RSA, general reductions to SAT, and what P vs NP is really asking.

Joe Duffy's RustConf 2017 closing keynote on his experience at Microsoft building Midori, an operating system written in a Rust-like safe systems language. He covers the technical and cultural challenges of applying those lessons to Windows.

John A. De Goes's Scalapeno keynote argues that Scala's popularity is declining because of compile times, complexity and compatibility problems. He proposes a path for Scala to survive, including a simplified functional subset.

A one-minute New Scientist clip showing a Japanese experiment in which drivers on a circular track produce a spontaneous traffic jam that travels backward. It illustrates phantom traffic jams without any obstacle.

LGR reviews the weeCee, a tiny mini PC that boots MS-DOS and Windows from a microSD card. It offers Sound Blaster Pro and General MIDI compatibility with VGA output, and the video tries it with DOS and Windows 98 games.

A movie clip from Star Trek IV: The Voyage Home in which Dr. McCoy, appalled by primitive 20th-century medicine, tries to smuggle Chekov out of a hospital.

FOSDEM 2020 talk from Collabora on pressure-vessel, an experimental mechanism that puts Steam games in containers on Linux. It covers using namespaces to give games their own runtime library stack independent of the host.

Mel Robbins gives a TEDxSF talk on why people sabotage themselves and how to push past hesitation. It is the source of her 'count backward from five' technique.