www.lesswrong.com/posts/uFBhZhdKLaZ6qF8mn/there-will-be-hells
2 corrections found
A month later, EPFL released FlyGym, a free, physics-simulated fruit fly body you could drive with code.
This timeline is off: FlyGym was available well before late 2024, with public releases beginning in 2023 and version 1.0.0 released on June 20, 2024.
Full reasoning
The post places FlyGym's release about one month after the October 2024 FlyWire papers, implying an initial late-2024 release. But FlyGym's own PyPI release history shows public releases beginning in September 2023, with version 1.0.0 released on June 20, 2024 and version 1.1.0 on October 1, 2024. So FlyGym was already publicly available months before October 2024, not first released "a month later."
That means the sentence misstates the chronology of when FlyGym became available.
1 source
- flygym · PyPI
Release history ... 1.1.0 Oct 1, 2024 ... 1.0.1 Jul 29, 2024 ... 1.0.0 Jun 20, 2024 ... 0.2.5 Jan 29, 2024 ... 0.2.4 Oct 26, 2023 ... 0.2.1 Sep 29, 2023 ... 0.1.1 Sep 21, 2023
But it was the release of MaleCNS v1.0 in September 2026, combined with coding assistants, that put this within anyone’s reach.
MaleCNS v1.0 was not released in September 2026. The official release notes date v1.0 to June 8, 2026; September 2026 was when Janelia publicized the work more broadly.
Full reasoning
The post says MaleCNS v1.0 was released in September 2026, but the project's official release notes list v1.0 (June 8, 2026). Janelia's September 2025/2026 news timeline also distinguishes the later publicity from the actual dataset release: the Janelia news post is dated September 2025 in the metadata string shown on the page (10/06/25), while the dedicated MaleCNS release-notes page records the versioned dataset release separately.
So the September date is not the v1.0 release date. The official project documentation says v1.0 was released on June 8, 2026.
2 sources
- Release Notes - MaleCNS connectome
Release notes v1.0 (June 8, 2026) ... v0.9 (October 5, 2025) Initial release of male CNS connectome.
- Researchers reveal connectome of the male fruit fly central nervous system | Janelia Research Campus
Researchers reveal connectome of the male fruit fly central nervous system ... 10/06/25 ... A team of researchers has unveiled the complete connectome of a male fruit fly central nervous system...