A Fishrrman fearless prediction:
The current-style butterfly keyboards will NEVER work reliably.
It might be more jam resistant if they add just 1mm to the design. There are only a few spots where debris can stop the butterfly levers from working and if there is just a smidge more clearance room, it'd be pretty hard for anything large enough to find its way down there. It's too easy for me to be an armchair designer though. Adding more space might introduce structural integrity issues or other problems.
When I got a closer look, I found that the butterfly mechanism was a lot more sturdy than I expected. I expected it to be less robust. What surprised me equally was how flimsy the keycaps seemed. Making a more robust keycap that can be more easily removed would also make keyboard jams a minor issue. I think some of the jam issues are actually due to the keycaps not aligning fully because a binding on them has weakened from people who pound it too hard.
I hammered my 2016's keys for several months as an experiment when it became clear I'd need a battery replacement eventually. The binding to one key broke and the keycap sunk down in that corner, leading it to be unresponsive unless you hit it just perfect. The part of the key I needed to hit was opposite the corner I tended to hit so I removed the keycap and flipped it upside down so that the damaged corner was away from my normal striking angle. It then went back to working fine.
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