I’d be interested to see a breakdown of reasons the keyboards failed for each model year.
And what percentage of the pre butterfly design were because of sand/dust etc. then contrast that to the butterfly design percentage. They could have merely improved reliability in another way(s) with the butterfly design.
And what percentage of the pre butterfly design were because of sand/dust etc. then contrast that to the butterfly design percentage. They could have merely improved reliability in another way(s) with the butterfly design.