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Compiler Bug Causes Compiler Bug: How a 12-Year-Old G++ Bug Took Down Solidity

Compilers aren't supposed to crash — especially not when compiling perfectly valid code like this: // SPDX-License-Identifier: UNLICENSED pragma solidity ^0.8.25; contract A { function a () public pure returns ( uint256 ) { return 1 ** 2 ; } } Yet running Solidity's compiler (solc) on this file on a standard Ubuntu 22.04 system (G++ 11.4, Boost 1.74) causes an immediate segmentation fault. At first, this seemed absurd. The code just returns 1 to the power of 2 — no memory tricks, unsafe casti

Scientists Design Huge Spacecraft That Could Carry 2,400 Colonists to Alpha Centauri

A team of engineers has come up with designs of a 36-mile spacecraft, dubbed Chrysalis, designed to carry up to 2,400 passengers to Alpha Centauri, the closest star system to our own. As first spotted by Live Science, the ambitious vision recently won the team the top prize at the Project Hyperion Design Competition, which was launched last year by an international consortium of scientists, engineers, and urban planners. Unsurprisingly, Chrysalis sounds like it was yanked straight out of a sci

Guess I'm a Rationalist Now

A week ago I attended LessOnline, a rationalist blogging conference featuring many people I’ve known for years—Scott Alexander, Eliezer Yudkowsky, Zvi Mowshowitz, Sarah Constantin, Carl Feynman—as well as people I’ve known only online and was delighted to meet in person, like Joe Carlsmith and Jacob Falkovich and Daniel Reeves. The conference was at Lighthaven, a bewildering maze of passageways, meeting-rooms, sleeping quarters, gardens, and vines off Telegraph Avenue in Berkeley, which has rece