“Useful computer” is subjective. It seems to be difficult for HN users to imagine a device that doesn’t have a terminal for example, but the overwhelming majori

“Useful computer” is subjective. It seems to be difficult for HN users to imagine a device that doesn’t have a terminal for example, but the overwhelming majority of users simply do not care. Many of them manage just fine with a smartphone as their primary (if not their only) computer, so clearly they are useful enough.