[solveit]

The current mainstream view is that QC is a very hard but tractable engineering problem. There is no fundamental reason for quantum error-correction to not work, and a demonstration that it cannot would be a major and surprising breakthrough in fundamental physics. This has been our state of understanding for a couple of decades now, and the progress we have been seeing is consistent with this view.

To be clear, there are people making sophisticated arguments for fundamental barriers to quantum computation. For instance, the quantum-skeptical mathematician Gil Kalai writes about his thoughts on recent progress on QC at (https://gilkalai.wordpress.com/2022/05/26/waging-war-on-quan...). His view is considerably more nuanced than this FT article, and much more conducive to learning and discussion. I hope you take the time to read it, and I think I'll submit this to HN main as well.

[packetlost]

As someone working in QC control systems, this holds up with my experience. We're fundamentally dealing with tough engineering problems, primarily on the hardware side of things. To be clear, these systems are very complex and rely on a multitude of software and hardware working, and working well. I'm of course biased, but I lean towards a positive outlook on QC.