Someone else has invented a new chord keyboard <https://www.nzherald.co.nz/technology/the-end-of-the-qwerty-keyboard-new-gadget-charachorder-could-help-you-type-at-500-words-per-minute/O5VV77DTVDF5W4Q5TIGFFJYODQ/>. The idea of being able to type using multiple fingers for each keystroke, instead of just one, is not new. There is also the convenience aspect, for example being able to mount the two halves on the sides of your body, so you can use the keyboard on the go. And adding a predictive system allows it to exceed the speeds of the world’s fastest typists on a conventional keyboard. But the drawback is always the same: it needs special training to use, and most people simply cannot be bothered. Come to think of it, is there any reason you cannot add chord recognition to a conventional typewriter-style keyboard? As in holding down multiple non-modifier keys at once.