Commentator goes 'full doomer': GPUs depreciate in 2-3 years, AI bubble may end in depression
petetrainor · x · 2026-09-26
Jim Stewartson says he is now 'full doomer' — not because chatbots won't get smarter, but because the entire economy has bet on the sci-fi story that they will.
- Key difference from past bubbles: railroad-era bubbles left physical infrastructure that added to GDP for decades; this time the bulk of spending is GPUs, which depreciate rapidly after 2-3 years. 'Data centers aren't railroad tracks; they are temporary money furnaces.'
- Conclusion: he sees no way out without a great depression, calling it 'the most absurd mass psychosis in human history'
An extreme strand of AI-bubble skepticism — it overlooks long-term software and capability value, but the GPU depreciation contrast is a substantive argument worth debating.
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