Ruby on Rails creator David Heinemeier Hansson says AI can't yet equal most junior programmers. It's why he still mostly codes by hand.

Tech entrepreneur David Heinemeier Hansson remains optimistic about the future of artificial intelligence but is not convinced it can replace even the most junior programmers at this stage. In a recent discussion on the podcast "Next Token," he likened the current state of AI to a flickering light bulb—brief moments of clarity in an otherwise dark landscape. Hansson expressed his skepticism about the idea that AI can dramatically enhance productivity in software development. He pointed out that when he requests AI to generate code, the results often do not measure up to the quality produced by entry-level programmers. "I’m not feeling that we’re falling behind at 37 Signals in terms of our ability to produce or improve our products," he stated. This sentiment echoes his doubts about claims suggesting that businesses could reduce their programming teams and still accelerate progress. He highlighted that humans were responsible for 95% of the code in Fizzy, a product developed by 37 Signals, which is inspired by Kanban methodologies. Although they have experimented with AI-enhanced features, these innovations have yet to be successfully integrated into the product. Hansson remains committed to writing his own code, finding beauty and satisfaction in the process, much like a craftsman who values the artistry of their work. On the other hand, Hansson acknowledged some of the impressive advancements in AI tools, particularly those developed by Shopify, where he serves on the board. He praised their AI agent, SiteKick, which assists merchants in setting up and optimizing their online shops, noting its substantial benefits. Looking ahead, Hansson is excited about the potential for AI to transform software development, similar to how the introduction of the iPhone revolutionized mobile optimization. He recognizes that we are on the brink of a new era, with uncertain outcomes but immense possibilities. "This is the first time we know the world is going to look totally different, and we don’t know what the final result will be," he remarked. Moreover, he stressed that AI is not a passing trend. "You don't get to roll these things back," he cautioned, suggesting that the momentum behind AI is too significant to ignore. The entire U.S. economy, he argued, is currently banking on AI overcoming its limitations and achieving what is referred to as Artificial General Intelligence. "The conviction of an entire economy to just go like 'Whatever it takes, we'll get there' is what makes America number one," he concluded.