It feels like the article merely repeats some of what I read in the Unix haters handbook years ago.<p>LISP machines were extraordinarily expensive for a single-user machine, much of which was due to the heavyweight hardware (like 32-bit processors, 32MB of RAM and fast high-capacity disks in the 1980s).<p>If I recall correctly, your basic Symbolics LISP machine, with software, cost about $50,000 in 1986. According to an online inflation calculator, that's $96,500 in today's money. I can guarantee that the resulting 64-core 128GB machine with 1TB of SSDs in RAID-10 configuration would beat the pants off of the Symbolics workstation, use less power and make much less noise and you'd have money left over.<p>All that said, interface responsiveness is part of the user experience. If your application/OS/device crosses that threshold were the user has to wait, it's a failure. People only stick with Word for Windows (surely the unnamed word processor referenced) because they don't know better or have a choice.